digitalmars.D - Making D Lang More easy.

Matthew Ong (51/51) May 11 2011 Hi All,

Mafi (25/76) May 11 2011 For Eclipse there is for example DDT and there are VisualD and Descent.

Matthew Ong (26/33) May 11 2011 Hi Mafi,

Mafi (30/63) May 11 2011 import std.stdio;

Matthew Ong (23/25) May 12 2011 Hi Walter/Mafi/anyone,

Walter Bright (3/4) May 11 2011 We don't do official benchmarks because of the bad feeling and accusatio...

Russel Winder (24/29) May 11 2011 I have some rather more anecdotal than experimental benchmarks for a

Matthew Ong (13/14) May 12 2011 @Dr Russel Winder:

Russel Winder (29/48) May 12 2011 a?

Matthew Ong (8/11) May 16 2011 On 5/12/2011 7:19 PM, Russel Winder wrote:

Russel Winder (24/34) May 16 2011 Apologies I underspecified. The one you are probably looking for is

bearophile (5/9) May 16 2011 There's even a Chapel version :-) I like several ideas of the Chapel lan...

Russel Winder (23/32) May 16 2011 Chapel is very good if you like PGAS (which I am not sure I do), it is

Jonathan M Davis (12/18) May 11 2011 That's an odd comment to make. D's import is very similar to Java's impo...

Mafi (6/24) May 11 2011 (Note that I meant #including .h-files)

Jonathan M Davis (9/37) May 11 2011 Well, in a way. The issue is that in Java, you must have one public clas...
Matthew Ong (6/6) May 12 2011 Hi Mafi,

Jonathan M Davis (9/17) May 12 2011 The syntax is valid for importing only a specific type or function from ...

Matthew Ong (10/27) May 16 2011 Thanks Jonathan & Mafi for really contributing to allow me to learn the

Vladimir Panteleev (11/19) May 11 2011 Funny, many people (myself included) think the executable size is still ...

Matthew Ong (4/6) May 12 2011 There is not much documentation. How do u include that into an IDE?

Vladimir Panteleev (8/14) May 13 2011 It's a command-line tool. IDE integration depends on your IDE's

Andrej Mitrovic (8/8) May 13 2011 You can use http://universalindent.sourceforge.net/, which embeds
Andrej Mitrovic (9/9) May 13 2011 And here is how I use uncrustify via a batch file:

Matthew Ong (6/15) May 16 2011 Hi Andrej,

Walter Bright (11/22) May 11 2011 Not sure what you mean by more complex than Java. The order of imports i...

bearophile (4/8) May 11 2011 Maybe we'll discuss about that again, because giving a help to remove un...

Timon Gehr (5/13) May 11 2011 I do not think this should be a compiler feature. It sounds like a task ...

bearophile (5/9) May 11 2011 This is a way to waste lot of time, especially in larger programs. You w...

Timon Gehr (10/19) May 11 2011 The compiler has the symbol tables. Everything beyond that is additional

Walter Bright (9/10) May 11 2011 Because such an error would be highly annoying when:

Jonathan M Davis (4/23) May 11 2011 Out of curiosity, do you have any idea what kind of impact it has on

Walter Bright (3/5) May 11 2011 That of course is highly dependent on the contents of those modules, and...

Jonathan M Davis (8/14) May 11 2011 I figured as much. It's just that if it's known to be generally expensiv...

Matthew Ong (10/13) May 12 2011 something better.

Matthew Ong (100/119) May 12 2011 Hi Walter,

Mafi (7/61) May 12 2011 Look at the last error. It means you have no main(){} and there can't be...

Matthew Ong (89/107) May 12 2011 Hi Mafi,

Jesse Phillips (2/116) May 12 2011

Matthew Ong (7/7) May 15 2011 Hi All that help and provided good working instructions,

Jonathan M Davis (20/29) May 15 2011 A package and a module are completely different. D has packages _exactly...

Walter Bright (2/4) May 12 2011 No. See the products I worked on: http://www.walterbright.com

Matthew Ong (50/56) May 16 2011 Hmm... Someone more experience in Java and also D might want to update

bearophile (4/10) May 16 2011 It's almost four years that I yell against this shit. But they like this...

bearophile (4/7) May 11 2011 I think no one has written this little tool for Phobos. On the other han...
Jesse Phililps (18/52) May 11 2011 Your points have been covered by others, but in general they are a littl...

Matthew Ong (16/22) May 12 2011 confusing. You're making >statements about things that just aren't true ...

Matthew Ong (2/2) May 12 2011 !!!! AH!!!! The past few post that I updated with png file is not shown.

Matthew Ong <ongbp yahoo.com> writes:

Hi All,

Recently I have been looking into another alternative programming
language to Java 1.6 and C++:

I narrowed downed to 2: Google Go and D Programming.
Preference has been given to D compare to Go for a few reasons like
more keywords than java(superset) and supports build in

I also downloaded the http://d-ide.sourceforge.net/.
This IDE is small foot print and tries to be like visual studio.
Why not someone in D consider porting this to a more mature IDE like:

SharpDevelop
http://sharpdevelop.net/OpenSource/SD/Default.aspx
Or
NetBeans or Eclipse
Instead of re-inventing the wheel?

1) D is a feature rich and seems to generate a really small file size
foot print for both *.dll and *.exe (Nice!!) compare to Google Go.


2) D Supports Interface and Class inheritance. (Nice!!)
   However I seems to have problem to model something like this in D:

   public class MyException extends Exception implements
SomeInterface{
   }

   I tried:
   class MyException : Exception, SomeInterface{ // << That cause
compilation error. Why??? How to work around or solution?
   }

   This allow me to move some of my library that I have build in java
into D without much remodeling and refactoring lots of code. (Really
nice!!!) compare to google go which build around a entirely different
object modeling concept. (That concepts sounded good and uses a lot of
interfaces and . Like java.sql.*)

3) As D seems to have direct support to C API which make direct OS
resource access and writing cool OS level tool a really nice work.
Have not tried anything yet, but seems to be more matured than Google
Go.

4) Is there also a Code formatting tool like:
   gofmt Gofmt formats Go programs. // That save me a lot to time.
   The Netbeans and eclipse has this build in feature.

5) import std.stdio; // The imports seems to be more complex to use
than java's import. There should be a tool to help resolved this and
also makes the order of importing of not important like in java.

6) Is there some build in source code checking command like:
 govet
http://golang.org/cmd/

7) How about unit test, is there a library like junit or cppunit
   is there something similar that can allow code to be profile,
tested and validated?

May I also ask, does the compiler and linker highlight the unused
import to the user so that they can be removed from source code.


The have experienced with C++ and C since back in the turbo c dos day
and Java. D seems to be promising. Overall nice and good. But can be
improved more to simplified coding cycle.

May 11 2011

Mafi <mafi example.org> writes:

Am 11.05.2011 15:41, schrieb Matthew Ong:
 Hi All,

Hi
 Recently I have been looking into another alternative programming
 language to Java 1.6 and C++:

 I narrowed downed to 2: Google Go and D Programming.
 Preference has been given to D compare to Go for a few reasons like
 more keywords than java(superset) and supports build in

 I also downloaded the http://d-ide.sourceforge.net/.
 This IDE is small foot print and tries to be like visual studio.
 Why not someone in D consider porting this to a more mature IDE like:

 SharpDevelop
 http://sharpdevelop.net/OpenSource/SD/Default.aspx
 Or
 NetBeans or Eclipse
 Instead of re-inventing the wheel?

For Eclipse there is for example DDT and there are VisualD and Descent.
http://code.google.com/a/eclipselabs.org/p/ddt/

 1) D is a feature rich and seems to generate a really small file size
 foot print for both *.dll and *.exe (Nice!!) compare to Google Go.


 2) D Supports Interface and Class inheritance. (Nice!!)
     However I seems to have problem to model something like this in D:

     public class MyException extends Exception implements
 SomeInterface{
     }

     I tried:
     class MyException : Exception, SomeInterface{ //<<  That cause
 compilation error. Why??? How to work around or solution?
     }

That is strange. Maybe you did something else wrong. The following works 
on my machine and dmd 2.051 (not the newest!).

class C {}
interface I { void print(); }
abstract class D : C, I {}
void main() {}

     This allow me to move some of my library that I have build in java
 into D without much remodeling and refactoring lots of code. (Really
 nice!!!) compare to google go which build around a entirely different
 object modeling concept. (That concepts sounded good and uses a lot of
 interfaces and . Like java.sql.*)

 3) As D seems to have direct support to C API which make direct OS
 resource access and writing cool OS level tool a really nice work.
 Have not tried anything yet, but seems to be more matured than Google
 Go.

 4) Is there also a Code formatting tool like:
     gofmt Gofmt formats Go programs. // That save me a lot to time.
     The Netbeans and eclipse has this build in feature.

 5) import std.stdio; // The imports seems to be more complex to use
 than java's import. There should be a tool to help resolved this and
 also makes the order of importing of not important like in java.

The module system has been given much attention so that the import order 
doesn't matter and you cannot use an ambigous symbol without error.
Because there's no VM, you have to import everything you want to use.
If you know C++, think of it like #include and using namespace x; at the 
same time.
http://d-programming-language.org/module.html#ImportDeclaration

 6) Is there some build in source code checking command like:
   govet
 http://golang.org/cmd/

 7) How about unit test, is there a library like junit or cppunit
     is there something similar that can allow code to be profile,
 tested and validated?

Simple unittesting is built in with the unittest block. Use -unittest to 
compile a unit test version (dmd). D also supports contracts and asserts.
http://d-programming-language.org/dbc.html
http://d-programming-language.org/unittest.html
If you want to benchmark use std.datetime.StopWatch
(http://d-programming-language.org/phobos/std_datetime.html#StopWatch).

 May I also ask, does the compiler and linker highlight the unused
 import to the user so that they can be removed from source code.

That sounds like an interesting feature but is AFAIK not implemented yet.

 The have experienced with C++ and C since back in the turbo c dos day
 and Java. D seems to be promising. Overall nice and good. But can be
 improved more to simplified coding cycle.

I hope I could help you,
  Mafi

May 11 2011

Matthew Ong <ongbp yahoo.com> writes:

Hi Mafi,

Thanks very much for the prompt reply. Thanks for the various links.
BTW, are you an employee within digitalmars?


class C {}
interface I { void print(); }
abstract class D: C,I {}

void main() {}

I need class D to be solid class doing both inherits from C but
allow me to provide code and for interface I.
BTW, does it matter if the compilation process goes this way?
The order of the code appearing in different file.

abstract class D: C,I {}
class C {}
interface I { void print(); }

I am aware about dmd -Ipath option. And yes, import works like
include which means (yucks!) I believe it would use the behavior of
import in java.

I like to maintain different class/interface/function into different
file, the dmd process seem to be too particular to compile the file
in a specific order unlike javac all I need to make sure those other
class/interfaces i needed are within the directory or -classpath
options.

That is also why I posted the import question in item 5. Google Go
seems to not care about this, if I am not wrong. I believe the
compiler and linker should be smart to resolved this using some
internal mapping.

Any new programming language should frees the developer to focus
more on their business logic than to maintain library and
dependency.

Btw, any benchmark done officially comparing google go/java/D?

I do run cygwin and D on a windows vista platform.

Matthew
ongbp yahoo.com

May 11 2011

Mafi <mafi example.org> writes:

Am 11.05.2011 16:48, schrieb Matthew Ong:
 Hi Mafi,

 Thanks very much for the prompt reply. Thanks for the various links.
 BTW, are you an employee within digitalmars?


 class C {}
 interface I { void print(); }
 abstract class D: C,I {}

 void main() {}

 I need class D to be solid class doing both inherits from C but
 allow me to provide code and for interface I.

import std.stdio;

class C {
     void print() { writeln("print");}
}
interface I { void print(); void  print2();}
class D : C, I {
     void print() { super.print(); }
     void print2() { writeln("print2"); }
}

void main() {
     auto d = new D;
     d.print();
     d.print2();
}
 BTW, does it matter if the compilation process goes this way?
 The order of the code appearing in different file.

The order in which appear declarations does not matter in D. If it does, 
it's a bug. The file in which you define and the order in which you 
import does not matter. There's never function shadowing in that form. 
(functions in this module shadow imported functions and some other minor 
stuff).

 abstract class D: C,I {}
 class C {}
 interface I { void print(); }

 I am aware about dmd -Ipath option. And yes, import works like
 include which means (yucks!) I believe it would use the behavior of
 import in java.

There are modules in D meaning that every file corresponds to exactly 
one module which builds a namespace.
When you import you just make symbols of other modules visible. They are 
not compiled in. Have to link with the module to make them available.

 I like to maintain different class/interface/function into different
 file, the dmd process seem to be too particular to compile the file
 in a specific order unlike javac all I need to make sure those other
 class/interfaces i needed are within the directory or -classpath
 options.

The order in which you compile and link does not matter in D.


 That is also why I posted the import question in item 5. Google Go
 seems to not care about this, if I am not wrong. I believe the
 compiler and linker should be smart to resolved this using some
 internal mapping.

 Any new programming language should frees the developer to focus
 more on their business logic than to maintain library and
 dependency.

Here you are probably right but a language can't have this with having both:
- being compiled to native machine code
- and not have a standard install mechanism, which D should avoid so it 
doesn't interfere with OS install systems (eg apt).

 Btw, any benchmark done officially comparing google go/java/D?

 I do run cygwin and D on a windows vista platform.

 Matthew
 ongbp yahoo.com

Mafi

May 11 2011

Matthew Ong <ongbp yahoo.com> writes:

Hi Walter/Mafi/anyone,

There are modules in D meaning that every file corresponds to exactly
one module which builds a namespace.
When you import you just make symbols of other modules visible. They are not
compiled in. Have to link with the module to make them available.

Using the sample code that mafi provided, how to break them into different file
like:

I.d , C.d and import both C & I within D.d file from entirely different
module/or
same module namespace?

See the code:
 I need class D to be solid class doing both inherits from C but
 allow me to provide code and for interface I.

import std.stdio;

class C {
     void print() { writeln("print");}
}
interface I { void print(); void  print2();}
class D : C, I {
     void print() { super.print(); }
     void print2() { writeln("print2"); }
}

void main() {
     auto d = new D;
     d.print();
     d.print2();
}

May 12 2011

Walter Bright <newshound2 digitalmars.com> writes:

On 5/11/2011 7:48 AM, Matthew Ong wrote:
 Btw, any benchmark done officially comparing google go/java/D?

We don't do official benchmarks because of the bad feeling and accusations of
of 
manipulation they inevitably engender.

May 11 2011

Russel Winder <russel russel.org.uk> writes:

On Wed, 2011-05-11 at 11:27 -0700, Walter Bright wrote:
 On 5/11/2011 7:48 AM, Matthew Ong wrote:
 Btw, any benchmark done officially comparing google go/java/D?

=20
 We don't do official benchmarks because of the bad feeling and accusation=

s of of=20
 manipulation they inevitably engender.

I have some rather more anecdotal than experimental benchmarks for a
couple of classes of problem covering a large number of languages.  What
is the information OP is after?

The summary I have is that D is faster than Go which is faster than Java
in some circumstance for some problems.  Conversely the reverse is also
true for different problems.

Of course source development and evolution time is a different metric
and D and Go win hands down over Java, but then so does Groovy. And
indeed Python.

I guess the overall summary is that OP's "any benchmark done officially
comparing" is a complete underspecification of the parameters of
comparison.

--=20
Russel.
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D
Dr Russel Winder      t: +44 20 7585 2200   voip: sip:russel.winder ekiga.n=
et
41 Buckmaster Road    m: +44 7770 465 077   xmpp: russel russel.org.uk
London SW11 1EN, UK   w: www.russel.org.uk  skype: russel_winder

May 11 2011

Matthew Ong <ongbp yahoo.com> writes:

 Dr Russel Winder:

The summary I have is that D is faster than Go which is faster than Java
in some circumstance for some problems.  Conversely the reverse is also
true for different problems.
-------------------------------------

Performace over java with D/Go that for sure. I have narrowed down to this 2 as


but then so does Groovy. And indeed Python.

Groovy, Python, JRuby, Mirah. They are not compile time type checking.
They are strong for writing limited scope like to replace jsp/php...
Because of that, the large scale programming needs to have some sort of compile
time type checking to minimized the runtime casting error.


Do u have the sample code for a typical data access of, kindly please email to:

ongbp yahoo.com

May 12 2011

Russel Winder <russel russel.org.uk> writes:

On Thu, 2011-05-12 at 10:31 +0000, Matthew Ong wrote:
  Dr Russel Winder:
=20
 The summary I have is that D is faster than Go which is faster than Java
 in some circumstance for some problems.  Conversely the reverse is also
 true for different problems.
 -------------------------------------
=20
 Performace over java with D/Go that for sure. I have narrowed down to thi=

s 2 as


a?

CLR is just Microsoft's version of JVM but altered so as to avoid law
suits. I think JVM optimization has had more work done than CLR

problem on the same hardware.

Generally for large computations Go is currently slower than Java but D
is much faster than either, and C++ and C faster still.  Fortran beats
all.

The JVM is not a barrier to performance, indeed there is some data to
show that dynamic optimization can lead to faster code than static
optimization.  Do not assume "bytecode interpreter means slow", just in
time compilation can give lie to this.

but then so does Groovy. And indeed Python.

 Groovy, Python, JRuby, Mirah. They are not compile time type checking.
 They are strong for writing limited scope like to replace jsp/php...
 Because of that, the large scale programming needs to have some sort of c=

ompile
 time type checking to minimized the runtime casting error.
=20
=20
 Do u have the sample code for a typical data access of, kindly please ema=

il to:
=20
 ongbp yahoo.com

I put my little experimental codes in microbenchmarking in Bazaar
branches accessible on my web site.  Note this is microbenchmarking with
all the hassles that go with it.  Especially when using JITs.


--=20
Russel.
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D
Dr Russel Winder      t: +44 20 7585 2200   voip: sip:russel.winder ekiga.n=
et
41 Buckmaster Road    m: +44 7770 465 077   xmpp: russel russel.org.uk
London SW11 1EN, UK   w: www.russel.org.uk  skype: russel_winder

May 12 2011

Matthew Ong <ongbp yahoo.com> writes:

On 5/12/2011 7:19 PM, Russel Winder wrote:
Hi Russel,
I looked into this URL,
http://www.russel.org.uk/Bazaar/

 I put my little experimental codes in microbenchmarking in Bazaar
 branches accessible on my web site.  Note this is microbenchmarking with
 all the hassles that go with it.  Especially when using JITs.

Not quite sure which one you are refering to.

-- 
Matthew Ong
email: ongbp yahoo.com

May 16 2011

Russel Winder <russel russel.org.uk> writes:

On Mon, 2011-05-16 at 22:54 +0800, Matthew Ong wrote:
 On 5/12/2011 7:19 PM, Russel Winder wrote:
 Hi Russel,
 I looked into this URL,
 http://www.russel.org.uk/Bazaar/
=20
 I put my little experimental codes in microbenchmarking in Bazaar
 branches accessible on my web site.  Note this is microbenchmarking wit=


h
 all the hassles that go with it.  Especially when using JITs.

=20
 Not quite sure which one you are refering to.

Apologies I underspecified.  The one you are probably looking for is
Pi_Quadrature.  This is a simple embarrasingly parallel calculation (of
the value of Pi using a straightforward quadrature.  This allows for
simple comparison of data parallelism and the various message passing
and explicit thread usage systems.  It is not really intended for
serious benchmarking, it is more a "toy" problem for showing all the
issues -- include JVM JIT startup issues.

If you want to branch the branch using Bazaar then use the URL
http://www.russel.org.uk/Bazaar/Pi_Quadrature.  If you want to browse
the code then there is an instance of Loggerhead running so point your
browser at the URL http://www.russel.org.uk:8080/Pi_Quadrature

Hopefully that is a better explanation :-)

--=20
Russel.
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D
Dr Russel Winder      t: +44 20 7585 2200   voip: sip:russel.winder ekiga.n=
et
41 Buckmaster Road    m: +44 7770 465 077   xmpp: russel russel.org.uk
London SW11 1EN, UK   w: www.russel.org.uk  skype: russel_winder

May 16 2011

bearophile <bearophileHUGS lycos.com> writes:

Russel Winder:

 If you want to branch the branch using Bazaar then use the URL
 http://www.russel.org.uk/Bazaar/Pi_Quadrature.  If you want to browse
 the code then there is an instance of Loggerhead running so point your
 browser at the URL http://www.russel.org.uk:8080/Pi_Quadrature

There's even a Chapel version :-) I like several ideas of the Chapel language
design.
Where are the results of the benchmarks?

Bye,
bearophile

May 16 2011

Russel Winder <russel russel.org.uk> writes:

On Mon, 2011-05-16 at 13:32 -0400, bearophile wrote:
 Russel Winder:
=20
 If you want to branch the branch using Bazaar then use the URL
 http://www.russel.org.uk/Bazaar/Pi_Quadrature.  If you want to browse
 the code then there is an instance of Loggerhead running so point your
 browser at the URL http://www.russel.org.uk:8080/Pi_Quadrature

=20
 There's even a Chapel version :-) I like several ideas of the Chapel lang=

uage design.
 Where are the results of the benchmarks?

Chapel is very good if you like PGAS (which I am not sure I do), it is
also quite efficient in use of resources (kudos to Brad et al.).  X10 is
profligate with resources so is definitely not on my "like" list just
now (apologies to Igor and the rest of the X10 team, but . . . ).
Fortress is interesting as it goes for the "you write mathematics and
we'll code generate" approach, which is very interesting -- assuming
Oracle continue to fund the activity.

There are no published results from my codes, it is all very much "do it
yourself" as far as numbers are concerned.  The codes are all about
anecdotal evidence not about structured statistical results.  Yes
structured statistical results could be created, but is it worth it?  =20

--=20
Russel.
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D
Dr Russel Winder      t: +44 20 7585 2200   voip: sip:russel.winder ekiga.n=
et
41 Buckmaster Road    m: +44 7770 465 077   xmpp: russel russel.org.uk
London SW11 1EN, UK   w: www.russel.org.uk  skype: russel_winder

May 16 2011

Jonathan M Davis <jmdavisProg gmx.com> writes:

On 2011-05-11 07:22, Mafi wrote:
 The module system has been given much attention so that the import order
 doesn't matter and you cannot use an ambigous symbol without error.
 Because there's no VM, you have to import everything you want to use.
 If you know C++, think of it like #include and using namespace x; at the
 same time.
 http://d-programming-language.org/module.html#ImportDeclaration

That's an odd comment to make. D's import is very similar to Java's import and 
is far more like Java's import than C/C++'s #include. D is probably pickier 
about possible name conflicts, but in general, importing in D and Java and 
pretty much the same. You're specifically importing _modules_ in D, and D 
doesn't enforce 1 public class per file, so the syntax is a bit different when 
importing specific classes rather than a whole module, and you do have to deal 
with the possibility of conflicting free functions whereas they aren't even 
legal in Java, but overall importing in Java and D and pretty similar. I don't 
know why you'd be comparing D's import to C/C++'s #include rather than Java's 
import.

- Jonathan M Davis

May 11 2011

Mafi <mafi example.org> writes:

Am 11.05.2011 18:17, schrieb Jonathan M Davis:
 On 2011-05-11 07:22, Mafi wrote:
 The module system has been given much attention so that the import order
 doesn't matter and you cannot use an ambigous symbol without error.
 Because there's no VM, you have to import everything you want to use.
 If you know C++, think of it like #include and using namespace x; at the
 same time.
 http://d-programming-language.org/module.html#ImportDeclaration

 That's an odd comment to make. D's import is very similar to Java's import and
 is far more like Java's import than C/C++'s #include. D is probably pickier
 about possible name conflicts, but in general, importing in D and Java and
 pretty much the same. You're specifically importing _modules_ in D, and D
 doesn't enforce 1 public class per file, so the syntax is a bit different when
 importing specific classes rather than a whole module, and you do have to deal
 with the possibility of conflicting free functions whereas they aren't even
 legal in Java, but overall importing in Java and D and pretty similar. I don't
 know why you'd be comparing D's import to C/C++'s #include rather than Java's
 import.

 - Jonathan M Davis

(Note that I meant #including .h-files)
What I wanted to make absolutely clear is that you can't just say 
java.util.ArrayList without explicitely importing java.util in D. It is 
possible in Java but not in D.
Importing in Java is like 'using some_class;' in C++.

May 11 2011

Jonathan M Davis <jmdavisProg gmx.com> writes:

On 2011-05-11 09:26, Mafi wrote:
 Am 11.05.2011 18:17, schrieb Jonathan M Davis:
 On 2011-05-11 07:22, Mafi wrote:
 The module system has been given much attention so that the import order
 doesn't matter and you cannot use an ambigous symbol without error.
 Because there's no VM, you have to import everything you want to use.
 If you know C++, think of it like #include and using namespace x; at the
 same time.
 http://d-programming-language.org/module.html#ImportDeclaration

 
 That's an odd comment to make. D's import is very similar to Java's
 import and is far more like Java's import than C/C++'s #include. D is
 probably pickier about possible name conflicts, but in general,
 importing in D and Java and pretty much the same. You're specifically
 importing _modules_ in D, and D doesn't enforce 1 public class per file,
 so the syntax is a bit different when importing specific classes rather
 than a whole module, and you do have to deal with the possibility of
 conflicting free functions whereas they aren't even legal in Java, but
 overall importing in Java and D and pretty similar. I don't know why
 you'd be comparing D's import to C/C++'s #include rather than Java's
 import.
 
 - Jonathan M Davis

 
 (Note that I meant #including .h-files)
 What I wanted to make absolutely clear is that you can't just say
 java.util.ArrayList without explicitely importing java.util in D. It is
 possible in Java but not in D.
 Importing in Java is like 'using some_class;' in C++.

Well, in a way. The issue is that in Java, you must have one public class per 
file, whereas in D, you can have whatever you want in a module. So, you're 
specifically importing a file in either case. It's just that Java is much more 
fine-grained about what goes in a file. But I see what you're saying. In that 
sense, D is more like C++. The import mechanism is very similar between the 
two, but the difference in how files are laid out does definitely change 
things.

- Jonathan M Davis

May 11 2011

Matthew Ong <ongbp yahoo.com> writes:

Hi Mafi,

Thanks very much for the response in earlier post about the solid class.

just FYI: import java.util.ArrayList; // can be written as
import std.container : SList;


module gc.gcalloc;// from here.
 private import gcx : PAGESIZE; // are they the same or very different?

May 12 2011

Jonathan M Davis <jmdavisProg gmx.com> writes:

On 2011-05-12 04:01, Matthew Ong wrote:
 Hi Mafi,
 
 Thanks very much for the response in earlier post about the solid class.
 
 just FYI: import java.util.ArrayList; // can be written as
 import std.container : SList;

The syntax is valid for importing only a specific type or function from a 
module, though I'd point out that SList and ArrayList are very different 
container types in case you thought that they were at all the same.

 module gc.gcalloc;// from here.
  private import gcx : PAGESIZE; // are they the same or very different?

All imports are private by default, so adding private to it does nothing. 
Adding public to it makes it so that any module importing the module with the 
import in it also imports what that import imports. So public does something 
there, but private is a no-op.

- Jonathan M Davis

May 12 2011

Matthew Ong <ongbp yahoo.com> writes:

On 5/12/2011 11:17 PM, Jonathan M Davis wrote:
 On 2011-05-12 04:01, Matthew Ong wrote:
 Hi Mafi,

 Thanks very much for the response in earlier post about the solid class.

 just FYI: import java.util.ArrayList; // can be written as
 import std.container : SList;

 The syntax is valid for importing only a specific type or function from a
 module, though I'd point out that SList and ArrayList are very different
 container types in case you thought that they were at all the same.

 module gc.gcalloc;// from here.
   private import gcx : PAGESIZE; // are they the same or very different?

 All imports are private by default, so adding private to it does nothing.
 Adding public to it makes it so that any module importing the module with the
 import in it also imports what that import imports. So public does something
 there, but private is a no-op.

 - Jonathan M Davis


Thanks Jonathan & Mafi for really contributing to allow me to learn the 
detail differences of D importing.

The ugly trail I posted about compilation error is due to -lib option 
always being dropped by the D-IDE and since, I switched to eclipse DDT 
as mafi suggested and also ONLY have ONE file(I do not like this 
limitation) per module. That problem is resolved.

-- 
Matthew Ong
email: ongbp yahoo.com

May 16 2011

"Vladimir Panteleev" <vladimir thecybershadow.net> writes:

I'll reply to points not addressed by others.

On Wed, 11 May 2011 16:41:25 +0300, Matthew Ong <ongbp yahoo.com> wrote:

 1) D is a feature rich and seems to generate a really small file size
 foot print for both *.dll and *.exe (Nice!!) compare to Google Go.

Funny, many people (myself included) think the executable size is still  
much larger than it can/should be :)

 4) Is there also a Code formatting tool like:
    gofmt Gofmt formats Go programs. // That save me a lot to time.
    The Netbeans and eclipse has this build in feature.

IIRC, Descent (D Eclipse plugin) has a decent code formatter.

Uncrustify ( http://uncrustify.sourceforge.net/ ) supports D.

 6) Is there some build in source code checking command like:
  govet
 http://golang.org/cmd/

There isn't, but you can pass the -c -o- flags to dmd to only compile  
given modules and not write object files.

-- 
Best regards,
  Vladimir                            mailto:vladimir thecybershadow.net

May 11 2011

Matthew Ong <ongbp yahoo.com> writes:

Hi Vladimir,

Thanks for the response. It was helpful.

IIRC, Descent (D Eclipse plugin) has a decent code formatter.
Uncrustify ( http://uncrustify.sourceforge.net/ ) supports D.

There is not much documentation. How do u include that into an IDE?

Do u use D-IDE or others. Currently I use D-IDE from sourceforge.

May 12 2011

"Vladimir Panteleev" <vladimir thecybershadow.net> writes:

On Thu, 12 May 2011 13:15:23 +0300, Matthew Ong <ongbp yahoo.com> wrote:

 Hi Vladimir,

 Thanks for the response. It was helpful.

 IIRC, Descent (D Eclipse plugin) has a decent code formatter.
 Uncrustify ( http://uncrustify.sourceforge.net/ ) supports D.

 There is not much documentation. How do u include that into an IDE?

It's a command-line tool. IDE integration depends on your IDE's  
capabilities.

 Do u use D-IDE or others. Currently I use D-IDE from sourceforge.

I use FAR ( http://thecybershadow.net/d/colorer/ ), and I can integrate  
Uncrustify with it if I wanted to, but it's not for everyone.

-- 
Best regards,
  Vladimir                            mailto:vladimir thecybershadow.net

May 13 2011

Andrej Mitrovic <andrej.mitrovich gmail.com> writes:

You can use http://universalindent.sourceforge.net/, which embeds
several code-formatters, one of which is uncrustify, and provides a
nice GUI.

You'll have to replace the Uncrustify executable when new updates come
out, as UniversalIndent isn't kept up to date at all times. The
uncrustify author does regular updates, he recently fixed some enum
indentation bug for D so you can always report new bugs to his
sourceforge page: http://uncrustify.sourceforge.net/.

May 13 2011

Andrej Mitrovic <andrej.mitrovich gmail.com> writes:

And here is how I use uncrustify via a batch file:

"D:/Apps/UniversalIndentGUI_win32/indenters/uncrustify.exe"
--no-backup --replace %1 -c
"D:/Apps/UniversalIndentGUI_win32/indenters/uncrustify.cfg"

%1 is the filename, e.g. "C:/main.d", --no-backup means exactly what
it says, you might want to remove that to be safe.

You could easily make a key shortcut to invoke such a script, as long
as you can get the name of the currently opened file in whatever IDE
you're using.

May 13 2011

Matthew Ong <ongbp yahoo.com> writes:

On 5/14/2011 5:52 AM, Andrej Mitrovic wrote:
 And here is how I use uncrustify via a batch file:

 "D:/Apps/UniversalIndentGUI_win32/indenters/uncrustify.exe"
 --no-backup --replace %1 -c
 "D:/Apps/UniversalIndentGUI_win32/indenters/uncrustify.cfg"

 %1 is the filename, e.g. "C:/main.d", --no-backup means exactly what
 it says, you might want to remove that to be safe.

 You could easily make a key shortcut to invoke such a script, as long
 as you can get the name of the currently opened file in whatever IDE
 you're using.

Hi Andrej,

Thanks very much.

-- 
Matthew Ong
email: ongbp yahoo.com

May 16 2011

Walter Bright <newshound2 digitalmars.com> writes:

On 5/11/2011 6:41 AM, Matthew Ong wrote:
 5) import std.stdio; // The imports seems to be more complex to use
 than java's import. There should be a tool to help resolved this and
 also makes the order of importing of not important like in java.

Not sure what you mean by more complex than Java. The order of imports in D is 
not important.


 6) Is there some build in source code checking command like:
   govet
 http://golang.org/cmd/

No.

 7) How about unit test, is there a library like junit or cppunit
     is there something similar that can allow code to be profile,
 tested and validated?

D has builtin unittest support with the -unittest switch:

http://www.digitalmars.com/d/2.0/unittest.html

a builtin profiler enabled with the -profile switch:

http://www.digitalmars.com/ctg/trace.html

and builtin code coverage analysis with the -cov switch:

http://www.digitalmars.com/d/2.0/code_coverage.html

 May I also ask, does the compiler and linker highlight the unused
 import to the user so that they can be removed from source code.

This was discussed and we decided it was not a good idea for various reasons.

May 11 2011

bearophile <bearophileHUGS lycos.com> writes:

Walter:

 May I also ask, does the compiler and linker highlight the unused
 import to the user so that they can be removed from source code.

 
 This was discussed and we decided it was not a good idea for various reasons.

Maybe we'll discuss about that again, because giving a help to remove unwanted
dependencies has its advantages.

Bye,
bearophile

May 11 2011

Timon Gehr <timon.gehr gmx.ch> writes:

 Walter:

 May I also ask, does the compiler and linker highlight the unused
 import to the user so that they can be removed from source code.

 This was discussed and we decided it was not a good idea for various reasons.

 Maybe we'll discuss about that again, because giving a help to remove unwanted

dependencies has its advantages.
 Bye,
 bearophile

I do not think this should be a compiler feature. It sounds like a task more
suitable for a source code analyzer.
Apart from that, if you need that functionality, you can easily write a small
script that comments out all imports in turn and tries to recompile.

May 11 2011

bearophile <bearophileHUGS lycos.com> writes:

Timon Gehr:

 I do not think this should be a compiler feature. It sounds like a task more
 suitable for a source code analyzer.

The compiler already has the information.


 Apart from that, if you need that functionality, you can easily write a small
 script that comments out all imports in turn and tries to recompile.

This is a way to waste lot of time, especially in larger programs. You want
something better.

Bye,
bearophile

May 11 2011

Timon Gehr <timon.gehr gmx.ch> writes:

 Timon Gehr:

 I do not think this should be a compiler feature. It sounds like a task more
 suitable for a source code analyzer.

 The compiler already has the information.

The compiler has the symbol tables. Everything beyond that is additional
computation. (arguably not too complex)
Another concern is, that if it is not optional, it will just nag you all the
time.
I agree that having some means of finding dead imports would be a nice thing.
But
only with the -w switch enabled.

But I also think it is more important that the compiler improves on compiling D
code.

I'd like to hear some of Walter's arguments on the matter.

 Apart from that, if you need that functionality, you can easily write a small
 script that comments out all imports in turn and tries to recompile.

 This is a way to waste lot of time, especially in larger programs. You want

something better.

I agree.

 Bye,
 bearophile


Timon

May 11 2011

Walter Bright <newshound2 digitalmars.com> writes:

On 5/11/2011 3:52 PM, Timon Gehr wrote:
 I'd like to hear some of Walter's arguments on the matter.

Because such an error would be highly annoying when:

1. you're using version/debug/staticif conditional compilation

2. you're commenting out code when trying different things or searching for a
bug

3. you're using the "import all;" idiom


Annoying programmers doesn't make them feel good about using D.


D also has very solid protection against problems caused by importing multiple 
modules with conflicting names. This means that the likelihood of actual bugs 
being caused by unused imports is pretty much nil.

May 11 2011

Jonathan M Davis <jmdavisProg gmx.com> writes:

On 2011-05-11 16:32, Walter Bright wrote:
 On 5/11/2011 3:52 PM, Timon Gehr wrote:
 I'd like to hear some of Walter's arguments on the matter.

 
 Because such an error would be highly annoying when:
 
 1. you're using version/debug/staticif conditional compilation
 
 2. you're commenting out code when trying different things or searching for
 a bug
 
 3. you're using the "import all;" idiom
 
 
 Annoying programmers doesn't make them feel good about using D.
 
 
 D also has very solid protection against problems caused by importing
 multiple modules with conflicting names. This means that the likelihood of
 actual bugs being caused by unused imports is pretty much nil.

Out of curiosity, do you have any idea what kind of impact it has on 
compilation performance to import unused modules?

- Jonathan M Davis

May 11 2011

Walter Bright <newshound2 digitalmars.com> writes:

On 5/11/2011 5:16 PM, Jonathan M Davis wrote:
 Out of curiosity, do you have any idea what kind of impact it has on
 compilation performance to import unused modules?

That of course is highly dependent on the contents of those modules, and what 
they correspondingly import.

May 11 2011

Jonathan M Davis <jmdavisProg gmx.com> writes:

On 2011-05-11 17:48, Walter Bright wrote:
 On 5/11/2011 5:16 PM, Jonathan M Davis wrote:
 Out of curiosity, do you have any idea what kind of impact it has on
 compilation performance to import unused modules?

 
 That of course is highly dependent on the contents of those modules, and
 what they correspondingly import.

I figured as much. It's just that if it's known to be generally expensive, 
then that would increase the insentive to remove unnecessary imports. 
Otherwise, I would tend to favor something closer to just importing everything 
and not worrying about it. But it is quite common in Java to import only 
exactly what you use, though I think that that's at least partially to avoid 
symbol clashes, and D doesn't work quite the same way in that regard.

- Jonathan M Davis

May 11 2011

Matthew Ong <ongbp yahoo.com> writes:

Hi Tom,

 Apart from that, if you need that functionality, you can easily write a small
 script that comments out all imports in turn and tries to recompile.

This is a way to waste lot of time, especially in larger programs. You >want

something better.

I agrees with bearophile entirely, the approaches that is done in Java
IDE (NetBeans) and development process does allow us remove the need to
care too much about
import java.util.*; // Better because the compiler handles it for the developer.
or
import java.util.LinkedList;
import java.util.ArrayList;  // Not being used here within this java file. IDE
does highlight it.

May 12 2011

Matthew Ong <ongbp yahoo.com> writes:

Hi Walter,

Thanks very much for the person reply to:
http://www.digitalmars.com/pnews/read.php?server=news.digitalmars.com&group=digitalmars.D&artnum=135959


Not sure what you mean by more complex than Java. The order of imports >in D is

not important.
If I separated a single module into multiple different file, the compilation
process seems to give me a lot of issue. I read from other
reply and also within the dmd/src directory, D seems to only allow one

interfaces are centralized within a single file. That might give issue to IDE
and
other
tool developers to write code generator, refactoring? might be dead wrong.

I tried to upload attachment, but it failed to be shown on the web site.
Hence, I email them over. Just in case that too is lost. Here are the
strange(to me)
error.

Sorry that seems to be rude.

BTW, were you involved with turbo C development in dos days in the past. You
seems
to be old school.

Matthew Ong

------------------------------------------------------------------------------------
 (4:50:21 PM) Compile D:\JDKs\D\devel\CornerCube\CornerCube\Exceptions.d
 (4:50:21 PM) dmd.exe -c "D:\JDKs\D\devel\CornerCube\CornerCube\Exceptions.d"

-of"D:\JDKs\D\devel\CornerCube\CornerCube\obj\Exceptions.obj"
-I"D:\JDKs\D\dmd2\src\phobos" -I"D:\JDKs\D\dmd2\src\druntime\import" -gc -debug
 (4:50:21 PM) Process ended with code 0
 (4:50:21 PM) Compile D:\JDKs\D\devel\CornerCube\CornerCube\Collections.d
 (4:50:21 PM) dmd.exe -c "D:\JDKs\D\devel\CornerCube\CornerCube\Collections.d"

-of"D:\JDKs\D\devel\CornerCube\CornerCube\obj\Collections.obj"
-I"D:\JDKs\D\dmd2\src\phobos" -I"D:\JDKs\D\dmd2\src\druntime\import" -gc -debug
 (4:50:22 PM) Process ended with code 0
 (4:50:22 PM) Compile D:\JDKs\D\devel\CornerCube\CornerCube\IO.d
 (4:50:22 PM) dmd.exe -c "D:\JDKs\D\devel\CornerCube\CornerCube\IO.d"

-of"D:\JDKs\D\devel\CornerCube\CornerCube\obj\IO.obj"
-I"D:\JDKs\D\dmd2\src\phobos" -I"D:\JDKs\D\dmd2\src\druntime\import" -gc -debug
 (4:50:22 PM) Process ended with code 0
 (4:50:22 PM) Compile D:\JDKs\D\devel\CornerCube\CornerCube\Lang.d
 (4:50:22 PM) dmd.exe -c "D:\JDKs\D\devel\CornerCube\CornerCube\Lang.d"

-of"D:\JDKs\D\devel\CornerCube\CornerCube\obj\Lang.obj"
-I"D:\JDKs\D\dmd2\src\phobos" -I"D:\JDKs\D\dmd2\src\druntime\import" -gc -debug
 (4:50:22 PM) Process ended with code 0
 (4:50:22 PM) Compile D:\JDKs\D\devel\CornerCube\CornerCube\Interfaces.d
 (4:50:22 PM) dmd.exe -c "D:\JDKs\D\devel\CornerCube\CornerCube\Interfaces.d"

-of"D:\JDKs\D\devel\CornerCube\CornerCube\obj\Interfaces.obj"
-I"D:\JDKs\D\dmd2\src\phobos" -I"D:\JDKs\D\dmd2\src\druntime\import" -gc -debug
 (4:50:22 PM) Process ended with code 0
 (4:50:22 PM) Link files to
D:\JDKs\D\devel\CornerCube\CornerCube\bin\CornerCube.exe
 (4:50:22 PM) dmd.exe "obj\Exceptions.obj" "obj\Collections.obj" "obj\IO.obj"

"obj\Lang.obj" "obj\Interfaces.obj"
-of"D:\JDKs\D\devel\CornerCube\CornerCube\bin\CornerCube.exe" -gc -debug
 (4:50:23 PM) Process ended with code 31

OPTLINK (R) for Win32  Release 8.00.8
Copyright (C) Digital Mars 1989-2010  All rights reserved.
http://www.digitalmars.com/ctg/optlink.html
OPTLINK : Warning 23: No Stack
obj\Exceptions.obj(Exceptions)
 Error 42: Symbol Undefined _D18TypeInfo_Interface6__vtblZ
obj\Exceptions.obj(Exceptions)
 Error 42: Symbol Undefined
_D6object9Exception6__ctorMFAyaAyakC6object9ThrowableZC9Exception
obj\Exceptions.obj(Exceptions)
 Error 42: Symbol Undefined _D9invariant12_d_invariantFC6ObjectZv
obj\Exceptions.obj(Exceptions)
 Error 42: Symbol Undefined _D3std6string6formatFYAya
obj\Exceptions.obj(Exceptions)
 Error 42: Symbol Undefined __d_throwc
obj\Exceptions.obj(Exceptions)
 Error 42: Symbol Undefined __d_newclass
obj\Exceptions.obj(Exceptions)
 Error 42: Symbol Undefined __d_dynamic_cast
obj\Exceptions.obj(Exceptions)
 Error 42: Symbol Undefined _D15TypeInfo_Struct6__vtblZ
obj\Exceptions.obj(Exceptions)
 Error 42: Symbol Undefined _D14TypeInfo_Tuple6__vtblZ
obj\Exceptions.obj(Exceptions)
 Error 42: Symbol Undefined _D3std5stdio12__ModuleInfoZ
obj\Exceptions.obj(Exceptions)
 Error 42: Symbol Undefined _D3std6string12__ModuleInfoZ
obj\Exceptions.obj(Exceptions)
 Error 42: Symbol Undefined _D10TypeInfo_k6__initZ
obj\Exceptions.obj(Exceptions)
 Error 42: Symbol Undefined _D12TypeInfo_Aya6__initZ
obj\Exceptions.obj(Exceptions)
 Error 42: Symbol Undefined _D6object6Object8opEqualsMFC6ObjectC6ObjectZb
obj\Exceptions.obj(Exceptions)
 Error 42: Symbol Undefined _D6object6Object8opEqualsMFC6ObjectZb
obj\Exceptions.obj(Exceptions)
 Error 42: Symbol Undefined _D6object6Object5opCmpMFC6ObjectZi
obj\Exceptions.obj(Exceptions)
 Error 42: Symbol Undefined _D6object6Object6toHashMFZk
obj\Exceptions.obj(Exceptions)
 Error 42: Symbol Undefined _D6object9Throwable8toStringMFZAya
obj\Exceptions.obj(Exceptions)
 Error 42: Symbol Undefined _D14TypeInfo_Class6__vtblZ
obj\Exceptions.obj(Exceptions)
 Error 42: Symbol Undefined _D9Exception7__ClassZ
obj\Collections.obj(Collections)
 Error 42: Symbol Undefined _D6Object7__ClassZ
obj\Collections.obj(Collections)
 Error 42: Symbol Undefined _D6object6Object8toStringMFZAya
obj\IO.obj(IO)
 Error 42: Symbol Undefined __d_array_bounds
obj\IO.obj(IO)
 Error 42: Symbol Undefined __fltused
obj\IO.obj(IO)
 Error 42: Symbol Undefined _D11TypeInfo_Aa6__initZ
obj\IO.obj(IO)
 Error 42: Symbol Undefined __d_arrayliteralT
obj\IO.obj(IO)
 Error 42: Symbol Undefined _D11TypeInfo_Au6__initZ
obj\IO.obj(IO)
 Error 42: Symbol Undefined _D3std6stream12__ModuleInfoZ
obj\IO.obj(IO)
 Error 42: Symbol Undefined _D3std6stream11InputStream11__InterfaceZ
obj\IO.obj(IO)
 Error 42: Symbol Undefined _D3std6stream12OutputStream11__InterfaceZ
obj\Interfaces.obj(Interfaces)
 Error 42: Symbol Undefined _D3std9container12__ModuleInfoZ
OPTLINK : Warning 134: No Start Address
--- errorlevel 31

May 12 2011

Mafi <mafi example.org> writes:

Am 12.05.2011 12:52, schrieb Matthew Ong:
 Hi Walter,

 Thanks very much for the person reply to:
 http://www.digitalmars.com/pnews/read.php?server=news.digitalmars.com&group=digitalmars.D&artnum=135959


 Not sure what you mean by more complex than Java. The order of imports>in D is

 not important.
 If I separated a single module into multiple different file, the compilation
 process seems to give me a lot of issue. I read from other
 reply and also within the dmd/src directory, D seems to only allow one

 interfaces are centralized within a single file. That might give issue to IDE
and
 other
 tool developers to write code generator, refactoring? might be dead wrong.

 I tried to upload attachment, but it failed to be shown on the web site.
 Hence, I email them over. Just in case that too is lost. Here are the
strange(to me)
 error.

 Sorry that seems to be rude.

 BTW, were you involved with turbo C development in dos days in the past. You
seems
 to be old school.

 Matthew Ong

 ------------------------------------------------------------------------------------
 (4:50:21 PM) Compile D:\JDKs\D\devel\CornerCube\CornerCube\Exceptions.d
 (4:50:21 PM) dmd.exe -c "D:\JDKs\D\devel\CornerCube\CornerCube\Exceptions.d"

 -of"D:\JDKs\D\devel\CornerCube\CornerCube\obj\Exceptions.obj"
 -I"D:\JDKs\D\dmd2\src\phobos" -I"D:\JDKs\D\dmd2\src\druntime\import" -gc -debug
 (4:50:21 PM) Process ended with code 0
 (4:50:21 PM) Compile D:\JDKs\D\devel\CornerCube\CornerCube\Collections.d
 (4:50:21 PM) dmd.exe -c "D:\JDKs\D\devel\CornerCube\CornerCube\Collections.d"

 -of"D:\JDKs\D\devel\CornerCube\CornerCube\obj\Collections.obj"
 -I"D:\JDKs\D\dmd2\src\phobos" -I"D:\JDKs\D\dmd2\src\druntime\import" -gc -debug
 (4:50:22 PM) Process ended with code 0
 (4:50:22 PM) Compile D:\JDKs\D\devel\CornerCube\CornerCube\IO.d
 (4:50:22 PM) dmd.exe -c "D:\JDKs\D\devel\CornerCube\CornerCube\IO.d"

 -of"D:\JDKs\D\devel\CornerCube\CornerCube\obj\IO.obj"
 -I"D:\JDKs\D\dmd2\src\phobos" -I"D:\JDKs\D\dmd2\src\druntime\import" -gc -debug
 (4:50:22 PM) Process ended with code 0
 (4:50:22 PM) Compile D:\JDKs\D\devel\CornerCube\CornerCube\Lang.d
 (4:50:22 PM) dmd.exe -c "D:\JDKs\D\devel\CornerCube\CornerCube\Lang.d"

 -of"D:\JDKs\D\devel\CornerCube\CornerCube\obj\Lang.obj"
 -I"D:\JDKs\D\dmd2\src\phobos" -I"D:\JDKs\D\dmd2\src\druntime\import" -gc -debug
 (4:50:22 PM) Process ended with code 0
 (4:50:22 PM) Compile D:\JDKs\D\devel\CornerCube\CornerCube\Interfaces.d
 (4:50:22 PM) dmd.exe -c "D:\JDKs\D\devel\CornerCube\CornerCube\Interfaces.d"

 -of"D:\JDKs\D\devel\CornerCube\CornerCube\obj\Interfaces.obj"
 -I"D:\JDKs\D\dmd2\src\phobos" -I"D:\JDKs\D\dmd2\src\druntime\import" -gc -debug
 (4:50:22 PM) Process ended with code 0
 (4:50:22 PM) Link files to
D:\JDKs\D\devel\CornerCube\CornerCube\bin\CornerCube.exe
 (4:50:22 PM) dmd.exe "obj\Exceptions.obj" "obj\Collections.obj" "obj\IO.obj"

 "obj\Lang.obj" "obj\Interfaces.obj"
 -of"D:\JDKs\D\devel\CornerCube\CornerCube\bin\CornerCube.exe" -gc -debug
 (4:50:23 PM) Process ended with code 31

 OPTLINK (R) for Win32  Release 8.00.8

......
   Error 42: Symbol Undefined _D3std9container12__ModuleInfoZ
 OPTLINK : Warning 134: No Start Address
 --- errorlevel 31

Look at the last error. It means you have no main(){} and there can't be 
an .exe without a main.
Maybe you wanted to link them without making an executable. Then you 
need to pass the '-lib' switch.

Mafi

May 12 2011

Matthew Ong <ongbp yahoo.com> writes:

Hi Mafi,

Thanks again.

-of"D:\JDKs\D\devel\CornerCube\CornerCube\bin\CornerCube.exe"

Not too sure why this problem keep hopping on within the D-IDE.
In my other post. Within the IDE properties,.. I choosen DLL and
DMD for version 2.


Because the web in news group. I will tries to use another client.

I will look into the Eclipse IDE plugin link u sent.

---------------------------------------------------------------------
 (10:43:30 PM) Compile D:\JDKs\D\devel\CornerCube\CornerCube\Exceptions.d
 (10:43:30 PM) dmd.exe -c "D:\JDKs\D\devel\CornerCube\CornerCube\Exceptions.d"

-of"D:\JDKs\D\devel\CornerCube\CornerCube\obj\Exceptions.obj"
-I"D:\JDKs\D\dmd2\src\phobos" -I"D:\JDKs\D\dmd2\src\druntime\import" -gc -debug
 (10:43:30 PM) Process ended with code 0
 (10:43:30 PM) Compile D:\JDKs\D\devel\CornerCube\CornerCube\Collections.d
 (10:43:30 PM) dmd.exe -c "D:\JDKs\D\devel\CornerCube\CornerCube\Collections.d"

-of"D:\JDKs\D\devel\CornerCube\CornerCube\obj\Collections.obj"
-I"D:\JDKs\D\dmd2\src\phobos" -I"D:\JDKs\D\dmd2\src\druntime\import" -gc -debug
 (10:43:31 PM) Process ended with code 0
 (10:43:31 PM) Compile D:\JDKs\D\devel\CornerCube\CornerCube\IO.d
 (10:43:31 PM) dmd.exe -c "D:\JDKs\D\devel\CornerCube\CornerCube\IO.d"

-of"D:\JDKs\D\devel\CornerCube\CornerCube\obj\IO.obj"
-I"D:\JDKs\D\dmd2\src\phobos" -I"D:\JDKs\D\dmd2\src\druntime\import" -gc -debug
 (10:43:31 PM) Process ended with code 0
 (10:43:31 PM) Compile D:\JDKs\D\devel\CornerCube\CornerCube\Lang.d
 (10:43:31 PM) dmd.exe -c "D:\JDKs\D\devel\CornerCube\CornerCube\Lang.d"

-of"D:\JDKs\D\devel\CornerCube\CornerCube\obj\Lang.obj"
-I"D:\JDKs\D\dmd2\src\phobos" -I"D:\JDKs\D\dmd2\src\druntime\import" -gc -debug
 (10:43:31 PM) Process ended with code 0
 (10:43:31 PM) Compile D:\JDKs\D\devel\CornerCube\CornerCube\Interfaces.d
 (10:43:31 PM) dmd.exe -c "D:\JDKs\D\devel\CornerCube\CornerCube\Interfaces.d"

-of"D:\JDKs\D\devel\CornerCube\CornerCube\obj\Interfaces.obj"
-I"D:\JDKs\D\dmd2\src\phobos" -I"D:\JDKs\D\dmd2\src\druntime\import" -gc -debug
 (10:43:31 PM) Process ended with code 0
 (10:43:31 PM) Link files to
D:\JDKs\D\devel\CornerCube\CornerCube\bin\CornerCube.exe
 (10:43:31 PM) dmd.exe "obj\Exceptions.obj" "obj\Collections.obj" "obj\IO.obj"

"obj\Lang.obj" "obj\Interfaces.obj"
-L/IMPLIB:"D:\JDKs\D\devel\CornerCube\CornerCube\bin\CornerCube.lib"
-of"D:\JDKs\D\devel\CornerCube\CornerCube\bin\CornerCube.dll" -gc -debug
 (10:43:32 PM) Process ended with code 31

OPTLINK (R) for Win32  Release 8.00.8
Copyright (C) Digital Mars 1989-2010  All rights reserved.
http://www.digitalmars.com/ctg/optlink.html
obj\Exceptions.obj(Exceptions)
 Error 42: Symbol Undefined _D18TypeInfo_Interface6__vtblZ
obj\Exceptions.obj(Exceptions)
 Error 42: Symbol Undefined
_D6object9Exception6__ctorMFAyaAyakC6object9ThrowableZC9Exception
obj\Exceptions.obj(Exceptions)
 Error 42: Symbol Undefined _D9invariant12_d_invariantFC6ObjectZv
obj\Exceptions.obj(Exceptions)
 Error 42: Symbol Undefined _D3std6string6formatFYAya
obj\Exceptions.obj(Exceptions)
 Error 42: Symbol Undefined __d_throwc
obj\Exceptions.obj(Exceptions)
 Error 42: Symbol Undefined __d_newclass
obj\Exceptions.obj(Exceptions)
 Error 42: Symbol Undefined __d_dynamic_cast
obj\Exceptions.obj(Exceptions)
 Error 42: Symbol Undefined _D15TypeInfo_Struct6__vtblZ
obj\Exceptions.obj(Exceptions)
 Error 42: Symbol Undefined _D14TypeInfo_Tuple6__vtblZ
obj\Exceptions.obj(Exceptions)
 Error 42: Symbol Undefined _D3std5stdio12__ModuleInfoZ
obj\Exceptions.obj(Exceptions)
 Error 42: Symbol Undefined _D3std6string12__ModuleInfoZ
obj\Exceptions.obj(Exceptions)
 Error 42: Symbol Undefined _D10TypeInfo_k6__initZ
obj\Exceptions.obj(Exceptions)
 Error 42: Symbol Undefined _D12TypeInfo_Aya6__initZ
obj\Exceptions.obj(Exceptions)
 Error 42: Symbol Undefined _D6object6Object8opEqualsMFC6ObjectC6ObjectZb
obj\Exceptions.obj(Exceptions)
 Error 42: Symbol Undefined _D6object6Object8opEqualsMFC6ObjectZb
obj\Exceptions.obj(Exceptions)
 Error 42: Symbol Undefined _D6object6Object5opCmpMFC6ObjectZi
obj\Exceptions.obj(Exceptions)
 Error 42: Symbol Undefined _D6object6Object6toHashMFZk
obj\Exceptions.obj(Exceptions)
 Error 42: Symbol Undefined _D6object9Throwable8toStringMFZAya
obj\Exceptions.obj(Exceptions)
 Error 42: Symbol Undefined _D14TypeInfo_Class6__vtblZ
obj\Exceptions.obj(Exceptions)
 Error 42: Symbol Undefined _D9Exception7__ClassZ
obj\Collections.obj(Collections)
 Error 42: Symbol Undefined _D6Object7__ClassZ
obj\Collections.obj(Collections)
 Error 42: Symbol Undefined _D6object6Object8toStringMFZAya
obj\IO.obj(IO)
 Error 42: Symbol Undefined __d_array_bounds
obj\IO.obj(IO)
 Error 42: Symbol Undefined __fltused
obj\IO.obj(IO)
 Error 42: Symbol Undefined _D11TypeInfo_Aa6__initZ
obj\IO.obj(IO)
 Error 42: Symbol Undefined __d_arrayliteralT
obj\IO.obj(IO)
 Error 42: Symbol Undefined _D11TypeInfo_Au6__initZ
obj\IO.obj(IO)
 Error 42: Symbol Undefined _D3std6stream12__ModuleInfoZ
obj\IO.obj(IO)
 Error 42: Symbol Undefined _D3std6stream11InputStream11__InterfaceZ
obj\IO.obj(IO)
 Error 42: Symbol Undefined _D3std6stream12OutputStream11__InterfaceZ
obj\Interfaces.obj(Interfaces)
 Error 42: Symbol Undefined _D3std9container12__ModuleInfoZ
--- errorlevel 31

May 12 2011

Jesse Phillips <jessekphillips+D gmail.com> writes:

It looks like your build environment is wrong. The linker doesn't know where to
find Phobos and Druntime. I wouldn't expect a simple hello world program to
compile with this.

Matthew Ong Wrote:

 Hi Mafi,
 
 Thanks again.
 
 -of"D:\JDKs\D\devel\CornerCube\CornerCube\bin\CornerCube.exe"
 
 Not too sure why this problem keep hopping on within the D-IDE.
 In my other post. Within the IDE properties,.. I choosen DLL and
 DMD for version 2.
 
 
 Because the web in news group. I will tries to use another client.
 
 I will look into the Eclipse IDE plugin link u sent.
 
 ---------------------------------------------------------------------
 (10:43:30 PM) Compile D:\JDKs\D\devel\CornerCube\CornerCube\Exceptions.d
 (10:43:30 PM) dmd.exe -c "D:\JDKs\D\devel\CornerCube\CornerCube\Exceptions.d"

 -of"D:\JDKs\D\devel\CornerCube\CornerCube\obj\Exceptions.obj"
 -I"D:\JDKs\D\dmd2\src\phobos" -I"D:\JDKs\D\dmd2\src\druntime\import" -gc -debug
 (10:43:30 PM) Process ended with code 0
 (10:43:30 PM) Compile D:\JDKs\D\devel\CornerCube\CornerCube\Collections.d
 (10:43:30 PM) dmd.exe -c "D:\JDKs\D\devel\CornerCube\CornerCube\Collections.d"

 -of"D:\JDKs\D\devel\CornerCube\CornerCube\obj\Collections.obj"
 -I"D:\JDKs\D\dmd2\src\phobos" -I"D:\JDKs\D\dmd2\src\druntime\import" -gc -debug
 (10:43:31 PM) Process ended with code 0
 (10:43:31 PM) Compile D:\JDKs\D\devel\CornerCube\CornerCube\IO.d
 (10:43:31 PM) dmd.exe -c "D:\JDKs\D\devel\CornerCube\CornerCube\IO.d"

 -of"D:\JDKs\D\devel\CornerCube\CornerCube\obj\IO.obj"
 -I"D:\JDKs\D\dmd2\src\phobos" -I"D:\JDKs\D\dmd2\src\druntime\import" -gc -debug
 (10:43:31 PM) Process ended with code 0
 (10:43:31 PM) Compile D:\JDKs\D\devel\CornerCube\CornerCube\Lang.d
 (10:43:31 PM) dmd.exe -c "D:\JDKs\D\devel\CornerCube\CornerCube\Lang.d"

 -of"D:\JDKs\D\devel\CornerCube\CornerCube\obj\Lang.obj"
 -I"D:\JDKs\D\dmd2\src\phobos" -I"D:\JDKs\D\dmd2\src\druntime\import" -gc -debug
 (10:43:31 PM) Process ended with code 0
 (10:43:31 PM) Compile D:\JDKs\D\devel\CornerCube\CornerCube\Interfaces.d
 (10:43:31 PM) dmd.exe -c "D:\JDKs\D\devel\CornerCube\CornerCube\Interfaces.d"

 -of"D:\JDKs\D\devel\CornerCube\CornerCube\obj\Interfaces.obj"
 -I"D:\JDKs\D\dmd2\src\phobos" -I"D:\JDKs\D\dmd2\src\druntime\import" -gc -debug
 (10:43:31 PM) Process ended with code 0
 (10:43:31 PM) Link files to
D:\JDKs\D\devel\CornerCube\CornerCube\bin\CornerCube.exe
 (10:43:31 PM) dmd.exe "obj\Exceptions.obj" "obj\Collections.obj" "obj\IO.obj"

 "obj\Lang.obj" "obj\Interfaces.obj"
 -L/IMPLIB:"D:\JDKs\D\devel\CornerCube\CornerCube\bin\CornerCube.lib"
 -of"D:\JDKs\D\devel\CornerCube\CornerCube\bin\CornerCube.dll" -gc -debug
 (10:43:32 PM) Process ended with code 31

 OPTLINK (R) for Win32  Release 8.00.8
 Copyright (C) Digital Mars 1989-2010  All rights reserved.
 http://www.digitalmars.com/ctg/optlink.html
 obj\Exceptions.obj(Exceptions)
  Error 42: Symbol Undefined _D18TypeInfo_Interface6__vtblZ
 obj\Exceptions.obj(Exceptions)
  Error 42: Symbol Undefined
 _D6object9Exception6__ctorMFAyaAyakC6object9ThrowableZC9Exception
 obj\Exceptions.obj(Exceptions)
  Error 42: Symbol Undefined _D9invariant12_d_invariantFC6ObjectZv
 obj\Exceptions.obj(Exceptions)
  Error 42: Symbol Undefined _D3std6string6formatFYAya
 obj\Exceptions.obj(Exceptions)
  Error 42: Symbol Undefined __d_throwc
 obj\Exceptions.obj(Exceptions)
  Error 42: Symbol Undefined __d_newclass
 obj\Exceptions.obj(Exceptions)
  Error 42: Symbol Undefined __d_dynamic_cast
 obj\Exceptions.obj(Exceptions)
  Error 42: Symbol Undefined _D15TypeInfo_Struct6__vtblZ
 obj\Exceptions.obj(Exceptions)
  Error 42: Symbol Undefined _D14TypeInfo_Tuple6__vtblZ
 obj\Exceptions.obj(Exceptions)
  Error 42: Symbol Undefined _D3std5stdio12__ModuleInfoZ
 obj\Exceptions.obj(Exceptions)
  Error 42: Symbol Undefined _D3std6string12__ModuleInfoZ
 obj\Exceptions.obj(Exceptions)
  Error 42: Symbol Undefined _D10TypeInfo_k6__initZ
 obj\Exceptions.obj(Exceptions)
  Error 42: Symbol Undefined _D12TypeInfo_Aya6__initZ
 obj\Exceptions.obj(Exceptions)
  Error 42: Symbol Undefined _D6object6Object8opEqualsMFC6ObjectC6ObjectZb
 obj\Exceptions.obj(Exceptions)
  Error 42: Symbol Undefined _D6object6Object8opEqualsMFC6ObjectZb
 obj\Exceptions.obj(Exceptions)
  Error 42: Symbol Undefined _D6object6Object5opCmpMFC6ObjectZi
 obj\Exceptions.obj(Exceptions)
  Error 42: Symbol Undefined _D6object6Object6toHashMFZk
 obj\Exceptions.obj(Exceptions)
  Error 42: Symbol Undefined _D6object9Throwable8toStringMFZAya
 obj\Exceptions.obj(Exceptions)
  Error 42: Symbol Undefined _D14TypeInfo_Class6__vtblZ
 obj\Exceptions.obj(Exceptions)
  Error 42: Symbol Undefined _D9Exception7__ClassZ
 obj\Collections.obj(Collections)
  Error 42: Symbol Undefined _D6Object7__ClassZ
 obj\Collections.obj(Collections)
  Error 42: Symbol Undefined _D6object6Object8toStringMFZAya
 obj\IO.obj(IO)
  Error 42: Symbol Undefined __d_array_bounds
 obj\IO.obj(IO)
  Error 42: Symbol Undefined __fltused
 obj\IO.obj(IO)
  Error 42: Symbol Undefined _D11TypeInfo_Aa6__initZ
 obj\IO.obj(IO)
  Error 42: Symbol Undefined __d_arrayliteralT
 obj\IO.obj(IO)
  Error 42: Symbol Undefined _D11TypeInfo_Au6__initZ
 obj\IO.obj(IO)
  Error 42: Symbol Undefined _D3std6stream12__ModuleInfoZ
 obj\IO.obj(IO)
  Error 42: Symbol Undefined _D3std6stream11InputStream11__InterfaceZ
 obj\IO.obj(IO)
  Error 42: Symbol Undefined _D3std6stream12OutputStream11__InterfaceZ
 obj\Interfaces.obj(Interfaces)
  Error 42: Symbol Undefined _D3std9container12__ModuleInfoZ
 --- errorlevel 31

May 12 2011

Matthew Ong <ongbp yahoo.com> writes:

Hi All that help and provided good working instructions,

The ugly build trail is due to the D-IDE setting problem in windows
vista. The eclipse version that Mafi shown is working fine now and
able to allow me to specify -lib option.

The importing issue is due to the manner that D can only allow single
file for single module. :( (Moving from Java) multiple file per
package(module) is allowed and easy for handling large projects.

May 15 2011

Jonathan M Davis <jmdavisProg gmx.com> writes:

On 2011-05-15 08:13, Matthew Ong wrote:
 Hi All that help and provided good working instructions,
 
 The ugly build trail is due to the D-IDE setting problem in windows
 vista. The eclipse version that Mafi shown is working fine now and
 able to allow me to specify -lib option.
 
 The importing issue is due to the manner that D can only allow single
 file for single module. :( (Moving from Java) multiple file per
 package(module) is allowed and easy for handling large projects.

A package and a module are completely different. D has packages _exactly_ like 
Java does, and they both do them the same. All of the modules in a folder are 
part of the same package. Java also does only one module per file. The 
difference is that Java enforces that every public class be in its own module. 
So, you end up with a situation where every module represents a public class - 
so much so that a compiled module in Java results in a .class file.

Now, Java doesn't use the term module, but the way their package system is 
very similar to D - including packages - except that they are far more 
restrictive about what goes in an individual module / source file. The result 
is a proliferation of modules / source files.

Thinking of a Java package and a D module as the same thing is going to get 
you into trouble if you ever have to do anything with package-level access. A 
Java package is essentially a D package, and a Java source file is essentially 
a D source file / module. It's just that Java has greater restrictions on what 
goes in a source file, forcing you to create a lot of them.

So, porting Java code to D either means that you either have a lot of 
extraneous modules with a single class in each, or you merge source files to 
reduce the number of files / modules that you have.

- Jonathan M Davis

May 15 2011

Walter Bright <newshound2 digitalmars.com> writes:

On 5/12/2011 3:52 AM, Matthew Ong wrote:
 BTW, were you involved with turbo C development in dos days in the past. You
seems
 to be old school.

No. See the products I worked on: http://www.walterbright.com

May 12 2011

Matthew Ong <ongbp yahoo.com> writes:

On 5/12/2011 2:23 AM, Walter Bright wrote:
Hi Walter,
 Not sure what you mean by more complex than Java. The order of imports
 in D is not important.

Hmm... Someone more experience in Java and also D might want to update 
this URL and help some new Java To D developer to figure out the import 
subtle differences
http://prowiki.org/wiki4d/wiki.cgi?JavaToD

 But it is quite common in Java to import >only
exactly what you use, though I think that that's at least partially to 
avoid
symbol clashes, and D doesn't work quite the same way in that regard.

Yes. I agrees with Jonathan. Please take a look at these 2 blocks bellow.

In Java,

import java.util.*; // for LinkedList / HashMap
import java.sql.*;  // for JDBC API

class MyTable{
   void read(){
       ... // Obtain ResultSet
       Date date=rs.getDate(1); // this line will always cause 
compilation error because both java.util & java.sql package has Date class.

   }

   void readFixed(){
       ... // Obtain ResultSet
       java.util.Date date=rs.getDate(1); // this will fixed the 
compilation error while still keep both the imports.
   }
}

http://www.digitalmars.com/d/2.0/module.html

module A;
void foo();
void bar();
------------------------
module B;
void foo();
void bar();
------------------------
module C;
import A;
void foo();

// .... Due to the fact that there is only one D source file per module, 
and from what I can see, there are normally many 
functions/classes/others... in between here. The user of that function 
might have forgotten about the foo defined above.

void test()
{
   // the line below is really >dangerous< and might have been missed 
out because it is NOT flagged. Such things are always flag within Java 
and also google Go and maybe c/c++. Hopefully this will be flag as 
compilation erro to others kind of syntax.
   foo(); // C.foo() is called, it is found before imports are searched
   bar(); // A.bar() is called, since imports are searched
}


-- 
Matthew Ong
email: ongbp yahoo.com

May 16 2011

bearophile <bearophileHUGS lycos.com> writes:

Matthew Ong:

    // the line below is really >dangerous< and might have been missed 
 out because it is NOT flagged. Such things are always flag within Java 
 and also google Go and maybe c/c++. Hopefully this will be flag as 
 compilation erro to others kind of syntax.
    foo(); // C.foo() is called, it is found before imports are searched
    bar(); // A.bar() is called, since imports are searched

It's almost four years that I yell against this shit. But they like this. The
design of D module system is broken still (and its implementation is even
worse).

Bye,
bearophile

May 16 2011

bearophile <bearophileHUGS lycos.com> writes:

Matthew Ong:

 4) Is there also a Code formatting tool like:
    gofmt Gofmt formats Go programs. // That save me a lot to time.
    The Netbeans and eclipse has this build in feature.

I think no one has written this little tool for Phobos. On the other hand, so
far D community seems to value some wrong forms of freedom, like formatting
freedom, common in C/C++.

Bye,
bearophile

May 11 2011

Jesse Phililps <jessekphillips+D gmail.com> writes:

Your points have been covered by others, but in general they are a little
confusing. You're making statements about things that just aren't true or
shouldn't be true for D. I'm going to request you try and elaborate what you
mean. And recap some information.

Matthew Ong Wrote:

...
 I also downloaded the http://d-ide.sourceforge.net/.
 This IDE is small foot print and tries to be like visual studio.
 Why not someone in D consider porting this to a more mature IDE like:
 
 SharpDevelop
 http://sharpdevelop.net/OpenSource/SD/Default.aspx
 Or
 NetBeans or Eclipse
 Instead of re-inventing the wheel?

Writing something from scratch is a lot of fun and can be easier, especially
when you think everyone else is doing it wrong.

There are integration projects for Eclipse and Visual Studio too.
 

 2) D Supports Interface and Class inheritance. (Nice!!)
    However I seems to have problem to model something like this in D:

...
    I tried:
    class MyException : Exception, SomeInterface{ // << That cause
 compilation error. Why??? How to work around or solution?
    }
 

This should work with the exception that you will have to implement the
interface functions. What compiler error are you getting?
...
 4) Is there also a Code formatting tool like:
    gofmt Gofmt formats Go programs. // That save me a lot to time.
    The Netbeans and eclipse has this build in feature.

Nope. D is very close to C so you can probably use ident, it has enough options
it should be able to do whatever you want it to.

http://linux.die.net/man/1/indent

 5) import std.stdio; // The imports seems to be more complex to use
 than java's import. There should be a tool to help resolved this and
 also makes the order of importing of not important like in java.

What do you mean order matters?

On the compilation side of things D is more complicated in that dmd must be
told where ever file being compiled is located and won't go looking for it.
rdmd however does come with dmd and will do this search for you.

 
 6) Is there some build in source code checking command like:
  govet
 http://golang.org/cmd/

Nope.

 
 7) How about unit test, is there a library like junit or cppunit
    is there something similar that can allow code to be profile,
 tested and validated?

As others/Walter mentioned. unttest blocks are part of the language, along with
contracts. dmd has profile and coverage switches.

 May I also ask, does the compiler and linker highlight the unused
 import to the user so that they can be removed from source code.

No. Though the linker should not compile unused code into the executable. A
common view is this should be handled by your IDE.

 The have experienced with C++ and C since back in the turbo c dos day
 and Java. D seems to be promising. Overall nice and good. But can be
 improved more to simplified coding cycle.

D needs much better tool support, especially for the Application developers.
But in some places it is just different.

May 11 2011

Matthew Ong <ongbp yahoo.com> writes:

 Jesse Phililps,

Your points have been covered by others, but in general they are a little

confusing. You're making >statements about things that just aren't true or
shouldn't be true for D.
I'm going to request you try and elaborate what you mean. And recap some
information.

That might be for some of the cases. Yes. This thread deserved to have some
point
cleared.
The post may have mix up the task of the ide and sdk tool/compiler tool. What I
am
looking at is the
entire development process of a developer day by day.

Library importing/creation, formatting code, documenting, Re-factoring,
Resource+memory+...etc
I did specified in my first post I narrowed down into D/Go compare to pure java
or
pure C/C++.

Writing something from scratch is a lot of fun and can be easier,
especially when you think everyone else is doing it wrong.
 No. Though the linker should not compile unused code into the executable.
 A common view is this should be handled by your IDE.

Yes. I agrees for some portion of that.  I am also faced with recursive
importing
error with either compiler or linker phase of the dmd process.

Some how the web newsgroup interface does not allow me to attached images either
that or the site update is slow.

May 12 2011

Matthew Ong <ongbp yahoo.com> writes:

!!!! AH!!!! The past few post that I updated with png file is not shown.
I suspected the web news group is not working that smooth.

May 12 2011

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