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digitalmars.D.bugs - [Issue 8094] New: Static if matching using alias parameter in template fails

reply d-bugmail puremagic.com writes:
http://d.puremagic.com/issues/show_bug.cgi?id=8094

           Summary: Static if matching using alias parameter in template
                    fails
           Product: D
           Version: D2
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: P2
         Component: DMD
        AssignedTo: nobody puremagic.com
        ReportedBy: simen.kjaras gmail.com


--- Comment #0 from Simen Kjaeraas <simen.kjaras gmail.com> 2012-05-14 03:45:33
PDT ---
template getParameters( T, alias P ) {
    static if ( is( T t == P!U, U... ) ) {
        alias U getParameters;
    } else {
        static assert( false );
    }
}

void main( ) {
    alias getParameters!( Tuple!(int, string), Tuple ) args;
}

This asserts. Replace T t == P!U, U... with T t == Tuple!U, U..., and it works.
(but of course then the intended functionality does not work)

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next sibling parent d-bugmail puremagic.com writes:
http://d.puremagic.com/issues/show_bug.cgi?id=8094



--- Comment #2 from github-bugzilla puremagic.com 2012-05-14 16:23:49 PDT ---
Commits pushed to master at https://github.com/D-Programming-Language/dmd

https://github.com/D-Programming-Language/dmd/commit/f61519bdae25f78fbeb355a8b732c8a54bb5cef0
fix Issue 8094 - Static if matching using alias parameter in template fails

https://github.com/D-Programming-Language/dmd/commit/23bb1acdadaaa5b711974c5a144829b510d6f655
Merge pull request #948 from 9rnsr/fix8094

Issue 8094 - Static if matching using alias parameter in template fails

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prev sibling parent d-bugmail puremagic.com writes:
http://d.puremagic.com/issues/show_bug.cgi?id=8094


Walter Bright <bugzilla digitalmars.com> changed:

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


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