Code:

----
import std.conv;
void main() {
  static assert(
    is(typeof(("Failure: " ~ to!string(55)) == string))
  );

  static assert(0 , ("Failure: " ~ to!string(55)));
}
----
main.d(7): Error: static assert  ['F','a','i','l','u','r','e',':',' ','5','5']
----

The problem is the ugly-ass "print as array of individual characters".

I really don't understand what is going on, since the compile type of my string is indeed "string".

If I remove the "to!string", I get:
----
main.d(7): Error: static assert  "Failure"
----

1) Is this the "normal" behavior, or a "known limitation"?
2) Is there a "workaround"?

FYI, this was originally produced by code from Phobos, but was trimmed by me here.

monarch_dodra:

> 1) Is this the "normal" behavior, or a "known limitation"?

It seems a DMD bug, why don't you add it to Bugzilla?


> 2) Is there a "workaround"?

static assert(0, text("Failure: ", 55));

Bye,
bearophile

BTW, in docs about "text":

http://dlang.org/phobos/std_conv.html#text

"...Convenience functions for converting any number and types of
arguments into text (the three character widths)... "

What is the "three character widths" note?
Who knows?

On Friday, 27 July 2012 at 14:40:33 UTC, novice2 wrote:
> What is the "three character widths" note?
> Who knows?

string, wstring, and dstring. Width refers to the bit size
of the char (8 bit, 16 bit, or 32 bit).

Ah, thanks!

On Friday, 27 July 2012 at 14:47:49 UTC, Adam D. Ruppe wrote:
> On Friday, 27 July 2012 at 14:40:33 UTC, novice2 wrote:
>> What is the "three character widths" note?
>> Who knows?
>
> string, wstring, and dstring. Width refers to the bit size
> of the char (8 bit, 16 bit, or 32 bit).

On Friday, 27 July 2012 at 11:56:07 UTC, bearophile wrote:
> monarch_dodra:
>
>> 1) Is this the "normal" behavior, or a "known limitation"?
>
> It seems a DMD bug, why don't you add it to Bugzilla?
>
>
>> 2) Is there a "workaround"?
>
> static assert(0, text("Failure: ", 55));
>
> Bye,
> bearophile

Thanks. I'll create an entry in bugzilla.

On 07/27/2012 09:02 AM, monarch_dodra wrote:
> On Friday, 27 July 2012 at 11:56:07 UTC, bearophile wrote:
>> monarch_dodra:
>>
>>> 1) Is this the "normal" behavior, or a "known limitation"?
>>
>> It seems a DMD bug, why don't you add it to Bugzilla?
>>
>>
>>> 2) Is there a "workaround"?
>>
>> static assert(0, text("Failure: ", 55));
>>
>> Bye,
>> bearophile
>
> Thanks. I'll create an entry in bugzilla.

Thanks. I hope that will fix the Unicode ignorance of 'static assert' as well:

    static assert(false, "aüz");

produces the following output:

  Error: static assert  "a\xc3\xbcz"

Ali