[Issue 3480] New: Overload Select to work on aliases

[d-bugmail at puremagic.com]

http://d.puremagic.com/issues/show_bug.cgi?id=3480

           Summary: Overload Select to work on aliases
           Product: D
           Version: 2.035
          Platform: Other
        OS/Version: Linux
            Status: NEW
          Severity: enhancement
          Priority: P2
         Component: Phobos
        AssignedTo: nobody at puremagic.com
        ReportedBy: k-foley at onu.edu


--- Comment #0 from Kyle Foley <k-foley at onu.edu> 2009-11-06 12:42:06 PST ---
template Select(bool condition, alias T, alias F)
{
    static if (condition) alias T Select;
    else alias F Select;
}
template Select(bool condition, T, F)
{
    static if (condition) alias T Select;
    else alias F Select;
}

unittest
{
    static assert(is(Select!(true, int, long) == int));
    static assert(is(Select!(false, int, long) == long));
    static assert(Select!(true, 1, 5) == 1);
    static assert(Select!(false, 42, 23) == 23);
}

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