http://d.puremagic.com/issues/show_bug.cgi?id=2066

           Summary: toString(int) nto CTFE-compatible
           Product: D
           Version: 2.014
          Platform: PC
        OS/Version: Windows
            Status: NEW
          Severity: major
          Priority: P2
         Component: Phobos
        AssignedTo: bugzilla@digitalmars.com
        ReportedBy: simen.kjaras@gmail.com


import std.string;

pragma(msg, toString(42));

The above program fails to compile, with the error message "cannot evaluate toString(42) at compile time"


-- 

Reply to d-bugmail@puremagic.com,

> http://d.puremagic.com/issues/show_bug.cgi?id=2066
> 
> Summary: toString(int) nto CTFE-compatible
> Product: D
> Version: 2.014
> Platform: PC
> OS/Version: Windows
> Status: NEW
> Severity: major
> Priority: P2
> Component: Phobos
> AssignedTo: bugzilla@digitalmars.com
> ReportedBy: simen.kjaras@gmail.com
> import std.string;
> 
> pragma(msg, toString(42));
> 
> The above program fails to compile, with the error message "cannot
> evaluate toString(42) at compile time"
> 

in "static code" you can use "42.stringof" but, IIRC, that won't work in other CTFE functions.

http://d.puremagic.com/issues/show_bug.cgi?id=2066





------- Comment #2 from simen.kjaras@gmail.com  2008-05-04 16:32 -------
(In reply to comment #1)
> Reply to d-bugmail@puremagic.com,
> in "static code" you can use "42.stringof" but, IIRC, that won't work in
> other CTFE functions.

Example:

template foo(int line = __LINE__)
{
  pragma(msg, line.stringof); // prints 'line'.
  pragma(msg, toString(line)); // should print a number of some kind. Currently
does not.
}

That is pretty much why I need this.


-- 

On 04/05/2008, d-bugmail@puremagic.com <d-bugmail@puremagic.com> wrote:
>  import std.string;
>
>  pragma(msg, toString(42));
>
>  The above program fails to compile, with the error message "cannot evaluate
>  toString(42) at compile time"

You could try

    import std.metastrings;

    pragma(msg, ToString!(42));

http://d.puremagic.com/issues/show_bug.cgi?id=2066





------- Comment #4 from rosscanning2007@gmail.com  2008-11-24 00:23 -------
Thanks for the workaround, Janice. Here is another example that is almost certainly related (CTFE seems to work only with single-digit numbers!):

import std.stdio;
import std.string;

template Foo(uint id) {
   invariant string Foo = "writefln(" ~ std.string.toString(id) ~ ");";
}

invariant uint ID = 1;    // THIS LINE WORKS
//invariant uint ID = 10;     // THIS LINE FAILS

void main() {
   mixin(Foo!(ID));
}


-- 

http://d.puremagic.com/issues/show_bug.cgi?id=2066


Andrei Alexandrescu <andrei@metalanguage.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |ASSIGNED
                 CC|                            |andrei@metalanguage.com
         AssignedTo|nobody@puremagic.com        |andrei@metalanguage.com


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Don <clugdbug@yahoo.com.au> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |clugdbug@yahoo.com.au
            Summary|toString(int) nto           |to!(string)(int) into
                   |CTFE-compatible             |CTFE-compatible


--- Comment #5 from Don <clugdbug@yahoo.com.au> 2010-01-18 00:59:38 PST ---
Changed bug title to reflect changes in Phobos: toString -> to!(string). Fixed in svn 1402. Requires DMD svn 332 or later.

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Walter Bright <bugzilla@digitalmars.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|ASSIGNED                    |RESOLVED
                 CC|                            |bugzilla@digitalmars.com
         Resolution|                            |FIXED


--- Comment #6 from Walter Bright <bugzilla@digitalmars.com> 2010-01-30 22:44:16 PST ---
fixed dmd 2.040

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