• via Digitalmars-d-bugs (38/42) Aug 05 2016 https://issues.dlang.org/show_bug.cgi?id=16354

via Digitalmars-d-bugs <digitalmars-d-bugs puremagic.com> writes:

https://issues.dlang.org/show_bug.cgi?id=16354

          Issue ID: 16354
           Summary: CTFE static foreach doesn't work with mixin import
           Product: D
           Version: D2
          Hardware: x86_64
                OS: Linux
            Status: NEW
          Severity: minor
          Priority: P1
         Component: dmd
          Assignee: nobody puremagic.com
          Reporter: greensunny12 gmail.com

Using static foreach with mixin imports doesn't seem to work whereas it works
with the CTFE foreach loop;

foo.d

void main()
{
    import std.meta : AliasSeq;
    alias mods = AliasSeq!("test1");

    foreach (mod; mods)
        mixin("import bar : " ~ mod ~ " = bar_fun;");
    test1();
}

bar.d

void bar_fun()
{
    import std.stdio;
    writeln("works");
}

One gets:

 foo.d(9): Error: undefined identifier 'test1'

However this does work ("manual loop unrolling") fine:

foo.d

void main()
{
    import std.meta : AliasSeq;
    alias mods = AliasSeq!("test1");

    mixin("import bar : " ~ mods[0] ~ " = bar_fun;");
    test1();
}

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