//-betterC
import core.stdc.stdio;
import std.algorithm;

void main(){
    printf( "%d\n",startsWith("a","b") );
}

//Fails to compile with betterC, dmd/ldc2 last versions.

Any reason for not work with betterC or should i file the issue ?
(Find this on a bindbc lib, so i think that it may have worked previously)

On Saturday, 22 February 2020 at 02:01:25 UTC, SrMordred wrote:
> //-betterC
> import core.stdc.stdio;
> import std.algorithm;
>
> void main(){
>     printf( "%d\n",startsWith("a","b") );
> }
>
> //Fails to compile with betterC, dmd/ldc2 last versions.
>
> Any reason for not work with betterC or should i file the issue ?
> (Find this on a bindbc lib, so i think that it may have worked previously)

The issue is that strings aren't input ranges in betterC [1], due to autodecoding.

Normally you'd work around this using std.utf.byCodeUnit, but that's currently broken, because std.utf attempts to import core.exception.UnicodeException from druntime at module scope [2], causing any betterC program that imports std.utf to fail compilation.

So, for now, I think the best you can do is probably to copy-paste byCodeUnit into its own source file, and use that until std.utf is fixed.

[1] https://issues.dlang.org/show_bug.cgi?id=20139
[2] https://github.com/dlang/phobos/blob/7a656e09d23507d0c404dabaa2c440a45e7c753d/std/utf.d#L65

> The issue is that strings aren't input ranges in betterC [1], due to autodecoding.
>
> Normally you'd work around this using std.utf.byCodeUnit, but that's currently broken, because std.utf attempts to import core.exception.UnicodeException from druntime at module scope [2], causing any betterC program that imports std.utf to fail compilation.
>
> So, for now, I think the best you can do is probably to copy-paste byCodeUnit into its own source file, and use that until std.utf is fixed.
>
> [1] https://issues.dlang.org/show_bug.cgi?id=20139
> [2] https://github.com/dlang/phobos/blob/7a656e09d23507d0c404dabaa2c440a45e7c753d/std/utf.d#L65

Oh right, thanks!
Its the third time that autodecoding bite me in betterC and i always forgot of the possibility.