• bearophile (7/7) Nov 24 2009 Found on Reddit:
• Denis Koroskin (4/11) Nov 25 2009 Looks like go has arrays that support slices. Do they support appending?...
• Andrei Alexandrescu (8/24) Nov 25 2009 There's no built-in means to grow a slice. An example given in
• Sergey Gromov (13/21) Nov 26 2009 Arrays are values and cannot be resized after creation.
• bearophile (5/6) Nov 26 2009 Is []int better than int[] ?
• retard (4/11) Nov 26 2009 You could change to syntax for AAs to be 5 -> 7 since D doesn't use ->
• Sergey Gromov (5/11) Nov 26 2009 Well, try to read aloud int[5][10]. I come up with "Integer, five of

bearophile <bearophileHUGS lycos.com> writes:

Found on Reddit:

This looks a lot like D:
http://research.swtch.com/2009/11/go-data-structures.html

New features in Java, some of them look like D:
http://code.joejag.com/2009/new-language-features-in-java-7/

Bye,
bearophile

"Denis Koroskin" <2korden gmail.com> writes:

On Wed, 25 Nov 2009 03:03:59 +0300, bearophile <bearophileHUGS lycos.com>  
wrote:

 Found on Reddit:

 This looks a lot like D:
 http://research.swtch.com/2009/11/go-data-structures.html

 New features in Java, some of them look like D:
 http://code.joejag.com/2009/new-language-features-in-java-7/

 Bye,
 bearophile

Looks like go has arrays that support slices. Do they support appending?  
If so, what's their behavior and how do they solve stomping issues?

Andrei Alexandrescu <SeeWebsiteForEmail erdani.org> writes:

Denis Koroskin wrote:
 On Wed, 25 Nov 2009 03:03:59 +0300, bearophile 
 <bearophileHUGS lycos.com> wrote:
 
 Found on Reddit:

 This looks a lot like D:
 http://research.swtch.com/2009/11/go-data-structures.html

 New features in Java, some of them look like D:
 http://code.joejag.com/2009/new-language-features-in-java-7/

 Bye,
 bearophile

 
 Looks like go has arrays that support slices. Do they support appending? 
 If so, what's their behavior and how do they solve stomping issues?

There's no built-in means to grow a slice. An example given in 
"Effective Go" appends to slices without regard to stomping or 
dissolving sharing:

http://golang.org/doc/effective_go.html

Slices are obese pointers storing the pointer/length/capacity troika. I 
think D is in better shape here.

Andrei

Sergey Gromov <snake.scaly gmail.com> writes:

Wed, 25 Nov 2009 12:27:59 +0300, Denis Koroskin wrote:

 On Wed, 25 Nov 2009 03:03:59 +0300, bearophile <bearophileHUGS lycos.com>  
 wrote:
 
 This looks a lot like D:
 http://research.swtch.com/2009/11/go-data-structures.html

 
 Looks like go has arrays that support slices. Do they support appending?  
 If so, what's their behavior and how do they solve stomping issues?

Arrays are values and cannot be resized after creation.

    var array [10]int;

Arrays can be sliced like in D:

    var slice []int = array[5:7];

The length of this slice is len(slice) == 7 - 5 == 2.   The *capacity*
of this slice is cap(slice) == 10 - 5 == 5.

You can slice a slice beyond its length, up to capacity:

    var slice2 []int = slice[4:5];

Effectively slice is a tail of an array, with optional subdivision into
sub-head and sub-tail.

There is no array nor slice concatenation, nor any other way to change
slice length except slicing.

bearophile <bearophileHUGS lycos.com> writes:

Sergey Gromov:
     var slice []int = array[5:7];

Is []int better than int[] ?

[5:7] is a slice syntax a bit better than [5..7] (and it's used in Python). But
in D [5:7] is the literal for an AA...

Bye,
bearophile

retard <re tard.com.invalid> writes:

Thu, 26 Nov 2009 11:58:23 -0500, bearophile wrote:

 Sergey Gromov:
     var slice []int = array[5:7];

 
 Is []int better than int[] ?
 
 [5:7] is a slice syntax a bit better than [5..7] (and it's used in
 Python). But in D [5:7] is the literal for an AA...

You could change to syntax for AAs to be 5 -> 7 since D doesn't use -> 
for lambdas :) And even when D starts supporting them, they could use => 
instead.

Sergey Gromov <snake.scaly gmail.com> writes:

Thu, 26 Nov 2009 11:58:23 -0500, bearophile wrote:

 Sergey Gromov:
     var slice []int = array[5:7];

 
 Is []int better than int[] ?

Well, try to read aloud int[5][10]. I come up with "Integer, five of
them, ten times."  While [10][5]int is "Array of ten arrays of
integers."  It's *much* clearer.

 [5:7] is a slice syntax a bit better than [5..7] (and it's used in
 Python). But in D [5:7] is the literal for an AA... 

In Go, it'd be map[int]int{5:7}.