CTFE write message to console
Richard (Rikki) Andrew Cattermole
richard at cattermole.co.nz
Thu Apr 4 15:07:21 UTC 2024
On 05/04/2024 4:04 AM, Carl Sturtivant wrote:
> On Thursday, 4 April 2024 at 14:06:19 UTC, Richard (Rikki) Andrew
> Cattermole wrote:
>>
>> ```d
>> static assert(0, "message");
>> ```
>>
>> Or if it is known to be CTFE'd
>>
>> ```d
>> assert(0, "message");
>> ```
>>
>> Just a warning, its a one time use only for both.
>>
>> No other way to do it.
>
> That's ... unfortunate.
>
> Some search of the forum led me to some [decade plus old
> discussion](https://forum.dlang.org/post/j1n1m2$24p0$1@digitalmars.com)
> of a possible CTFE writeln function that would be a no-op at runtime,
> which to my surprise led me to find
> [core_builtins.__ctfeWrite](https://dlang.org/phobos/core_builtins.html#.__ctfeWrite) but when I tried it out, it compiled yet output no text to the console. Given your remarks I suppose I should have expected this.
Ah yes, I forgot about that particular thing, doesn't see much use as
far as I'm aware.
It should be working though.
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