• Namal (7/7) Nov 05 2015 Hello I am trying to convert BigInt to string like that while
• BBasile (5/12) Nov 05 2015 try
• Namal (3/19) Nov 05 2015 auto did it, but idup leads to
• BBasile (2/25) Nov 05 2015 sorry, I feel embarrassed now...good luck i wish you.
• Meta (16/23) Nov 05 2015 Try this instead:
• Namal (5/19) Nov 05 2015 If I try it like that i get:
• Ilya Yaroshenko (2/24) Nov 05 2015 string s1 = to!string(a).dup.sort.idup;
• Namal (3/4) Nov 05 2015 well, but I was just told not to use sort ??
• TheGag96 (10/15) Nov 05 2015 Whoa whoa whoa... This is the first time I've heard about this
• Meta (9/18) Nov 05 2015 It's a legacy issue that will hopefully be fixed someday. The
• bearophile (9/11) Nov 05 2015 void main() {
• bearophile (4/10) Nov 05 2015 Better:
• =?UTF-8?Q?Ali_=c3=87ehreli?= (3/5) Nov 05 2015 Were you immersed in another language? Rust?
• Chris (2/7) Nov 05 2015 His D doesn't seem to be Rusty though!
• =?UTF-8?Q?Ali_=c3=87ehreli?= (3/13) Nov 05 2015 Good one! ;) I'm really happy that he is still around.
• Chris (2/4) Nov 05 2015 So am I! The more, the merrier!
• Namal (2/13) Nov 06 2015 can I import libraries anywhere? Is this the proper way to do so?
• cym13 (6/24) Nov 06 2015 You can, and some say you should. The thing is, if you use

Namal <sotis22 mail.ru> writes:

Hello I am trying to convert BigInt to string like that while 
trying to sort it:

string s1 = to!string(a).dup.sort;

and get an error

cannot implicitly convert expression (_adSortChar(dup(to(a)))) of 
type char[] to string

what do I do wrong?

BBasile <bb.temp gmx.com> writes:

On Thursday, 5 November 2015 at 16:29:30 UTC, Namal wrote:
 Hello I am trying to convert BigInt to string like that while 
 trying to sort it:

 string s1 = to!string(a).dup.sort;

 and get an error

 cannot implicitly convert expression (_adSortChar(dup(to(a)))) 
 of type char[] to string

 what do I do wrong?

try

".idup"

otherwise

"auto s1 = "

Namal <sotis22 mail.ru> writes:

On Thursday, 5 November 2015 at 16:35:01 UTC, BBasile wrote:
 On Thursday, 5 November 2015 at 16:29:30 UTC, Namal wrote:
 Hello I am trying to convert BigInt to string like that while 
 trying to sort it:

 string s1 = to!string(a).dup.sort;

 and get an error

 cannot implicitly convert expression (_adSortChar(dup(to(a)))) 
 of type char[] to string

 what do I do wrong?

 try

 ".idup"

 otherwise

 "auto s1 = "

auto did it, but idup leads to

Error: can only sort a mutable array

BBasile <bb.temp gmx.com> writes:

On Thursday, 5 November 2015 at 16:39:03 UTC, Namal wrote:
 On Thursday, 5 November 2015 at 16:35:01 UTC, BBasile wrote:
 On Thursday, 5 November 2015 at 16:29:30 UTC, Namal wrote:
 Hello I am trying to convert BigInt to string like that while 
 trying to sort it:

 string s1 = to!string(a).dup.sort;

 and get an error

 cannot implicitly convert expression 
 (_adSortChar(dup(to(a)))) of type char[] to string

 what do I do wrong?

 try

 ".idup"

 otherwise

 "auto s1 = "

 auto did it, but idup leads to

 Error: can only sort a mutable array

sorry, I feel embarrassed now...good luck i wish you.

Meta <jared771 gmail.com> writes:

On Thursday, 5 November 2015 at 16:29:30 UTC, Namal wrote:
 Hello I am trying to convert BigInt to string like that while 
 trying to sort it:

 string s1 = to!string(a).dup.sort;

 and get an error

 cannot implicitly convert expression (_adSortChar(dup(to(a)))) 
 of type char[] to string

 what do I do wrong?

Try this instead:

string s1 = to!string(a).idup.sort()

I suspect there are two things happening here. First, calling dup 
on a string yields char[], not string (the difference being that 
string is immutable and char[] is not). A char[] cannot 
implicitly convert to string due to the difference in 
immutability, although the compiler *should* realize that the 
result of dup is a "unique" expression and be able to implicitly 
convert it... It may be because you then pass it to sort, which 
must keep it as a char[].

The second issue is that using .sort instead of .sort() (note the 
parentheses) calls the built-in sort instead of 
std.algorithm.sort, which is strongly discouraged. You should 
always use std.algorithm.sort over the built-in sort, which you 
can do just by appending those parentheses.

Namal <sotis22 mail.ru> writes:

On Thursday, 5 November 2015 at 16:45:10 UTC, Meta wrote:
 On Thursday, 5 November 2015 at 16:29:30 UTC, Namal wrote:
 Hello I am trying to convert BigInt to string like that while 
 trying to sort it:

 string s1 = to!string(a).dup.sort;

 and get an error

 cannot implicitly convert expression (_adSortChar(dup(to(a)))) 
 of type char[] to string

 what do I do wrong?

 Try this instead:

 string s1 = to!string(a).idup.sort()

If I try it like that i get:

Error: template std.algorithm.sorting.sort cannot deduce function 
from argument types !()(char[]), candidates are:

/../src/phobos/std/algorithm/sorting.d(996):

Ilya Yaroshenko <ilyayaroshenko gmail.com> writes:

On Thursday, 5 November 2015 at 16:53:50 UTC, Namal wrote:
 On Thursday, 5 November 2015 at 16:45:10 UTC, Meta wrote:
 On Thursday, 5 November 2015 at 16:29:30 UTC, Namal wrote:
 Hello I am trying to convert BigInt to string like that while 
 trying to sort it:

 string s1 = to!string(a).dup.sort;

 and get an error

 cannot implicitly convert expression 
 (_adSortChar(dup(to(a)))) of type char[] to string

 what do I do wrong?

 Try this instead:

 string s1 = to!string(a).idup.sort()

 If I try it like that i get:

 Error: template std.algorithm.sorting.sort cannot deduce 
 function from argument types !()(char[]), candidates are:

 /../src/phobos/std/algorithm/sorting.d(996):

string s1 = to!string(a).dup.sort.idup;

Namal <sotis22 mail.ru> writes:

On Thursday, 5 November 2015 at 17:13:07 UTC, Ilya Yaroshenko 
wrote:

 string s1 = to!string(a).dup.sort.idup;

well, but I was just told not to use sort ??

TheGag96 <thegag96 gmail.com> writes:

On Thursday, 5 November 2015 at 16:45:10 UTC, Meta wrote:
 The second issue is that using .sort instead of .sort() (note 
 the parentheses) calls the built-in sort instead of 
 std.algorithm.sort, which is strongly discouraged. You should 
 always use std.algorithm.sort over the built-in sort, which you 
 can do just by appending those parentheses.

Whoa whoa whoa... This is the first time I've heard about this 
difference, and I've used .sort plenty of times... That seems 
like really, REALLY bad design, especially considering the 
language allows functions to be called without parentheses. I 
thought I was using std.algorithm's version the whole time.

What's the difference between the implementations of arrays' 
.sort property and std.algorithm.sort()? And does sort() throw 
out that "unable to deduce function argument" error for a 
character array of all things?

Meta <jared771 gmail.com> writes:

On Thursday, 5 November 2015 at 20:45:45 UTC, TheGag96 wrote:
 Whoa whoa whoa... This is the first time I've heard about this 
 difference, and I've used .sort plenty of times... That seems 
 like really, REALLY bad design, especially considering the 
 language allows functions to be called without parentheses. I 
 thought I was using std.algorithm's version the whole time.

It's a legacy issue that will hopefully be fixed someday. The 
issue is that ever since D1, arrays have had a .sort property 
that uses a built-in sorting function. The compiler will only 
recognize it as the std.algorithm version of sort if you use 
parentheses.

 What's the difference between the implementations of arrays' 
 .sort property and std.algorithm.sort()? And does sort() throw 
 out that "unable to deduce function argument" error for a 
 character array of all things?

The built-in sort is buggy and slow and should never be used. As 
far as I know it does not produce errors of its own, so any error 
messages you see like that are coming from the std.algorithm sort.

bearophile <bearophileHUGS lycos.com> writes:

Namal:

 Hello I am trying to convert BigInt to string like that while 
 trying to sort it:

void main() {
     import std.stdio, std.algorithm, std.conv, std.bigint, 
std.string;

     auto n = 17.BigInt ^^ 179;
     n.text.dup.representation.sort().release.assumeUTF.writeln;
}

Bye,
bearophile

bearophile <bearophileHUGS lycos.com> writes:

 void main() {
     import std.stdio, std.algorithm, std.conv, std.bigint, 
 std.string;

     auto n = 17.BigInt ^^ 179;
     n.text.dup.representation.sort().release.assumeUTF.writeln;
 }

Better:

     n.to!(char[]).representation.sort().release.assumeUTF.writeln;

Bye,
bearophile

=?UTF-8?Q?Ali_=c3=87ehreli?= <acehreli yahoo.com> writes:

On 11/05/2015 09:40 AM, bearophile wrote:

 Bye,
 bearophile

Were you immersed in another language? Rust?

Ali

Chris <wendlec tcd.ie> writes:

On Thursday, 5 November 2015 at 19:30:02 UTC, Ali Çehreli wrote:
 On 11/05/2015 09:40 AM, bearophile wrote:

 Bye,
 bearophile

 Were you immersed in another language? Rust?

 Ali

His D doesn't seem to be Rusty though!

=?UTF-8?Q?Ali_=c3=87ehreli?= <acehreli yahoo.com> writes:

On 11/05/2015 11:35 AM, Chris wrote:
 On Thursday, 5 November 2015 at 19:30:02 UTC, Ali Çehreli wrote:
 On 11/05/2015 09:40 AM, bearophile wrote:

 Bye,
 bearophile

 Were you immersed in another language? Rust?

 Ali

 His D doesn't seem to be Rusty though!

Good one! ;) I'm really happy that he is still around.

Ali

Chris <wendlec tcd.ie> writes:

On Thursday, 5 November 2015 at 19:38:23 UTC, Ali Çehreli wrote:

 Good one! ;) I'm really happy that he is still around.

 Ali

So am I! The more, the merrier!

Namal <sotis22 mail.ru> writes:

On Thursday, 5 November 2015 at 17:40:12 UTC, bearophile wrote:
 Namal:

 Hello I am trying to convert BigInt to string like that while 
 trying to sort it:

 void main() {
     import std.stdio, std.algorithm, std.conv, std.bigint, 
 std.string;

     auto n = 17.BigInt ^^ 179;
     n.text.dup.representation.sort().release.assumeUTF.writeln;
 }

 Bye,
 bearophile

can I import libraries anywhere? Is this the proper way to do so?

cym13 <cpicard openmailbox.org> writes:

On Friday, 6 November 2015 at 10:00:23 UTC, Namal wrote:
 On Thursday, 5 November 2015 at 17:40:12 UTC, bearophile wrote:
 Namal:

 Hello I am trying to convert BigInt to string like that while 
 trying to sort it:

 void main() {
     import std.stdio, std.algorithm, std.conv, std.bigint, 
 std.string;

     auto n = 17.BigInt ^^ 179;
     n.text.dup.representation.sort().release.assumeUTF.writeln;
 }

 Bye,
 bearophile

 can I import libraries anywhere? Is this the proper way to do 
 so?

  You can, and some say you should. The thing is, if you use 
templates and import the necessary libraries within the template 
then the import occurs only if the template is instantiated which 
can be a big gain. Phobos makes great use of this technique for 
example.