Runtime evaluation

[nrgyzer]

== Auszug aus Mafi (mafi at example.org)'s Artikel
> Am 07.07.2011 23:23, schrieb nrgyzer:
> > Hi guys,
> >
> > I'm trying to read a string from a text file which contains a
value of an enumeration like:
> >
> > enum MyEnum : string {
> >     Entry_1 = "abc",
> >     Entry_2 = "def",
> >     Entry_3 = "ghi",
> > }
> >
> > Stream s = new File("myFile.ext", FileMode.In);
> > uint len;
> > s.read(len);
> > string entry = cast(string) s.readString(len);
> > s.close();
> >
> > writeln(mixin("MyEnum." ~ entry));
> >
> > myFile.ext may contain:
> > ...
> > Entry_2
> > Entry_1
> > Entry_2
> > Entry_3
> > ...
> >
> > But mixin's are for compile time only... is there any chance to
do this or do I've to use another method (like if/else or switch/
case):
> >
> > if (entry == "Entry_1") ...
> > else if (entry == "Entry_2") ...
> > ...
> >
> > Thanks a lot!
> Metaprogramming is the keyword but you don't have to do it yourself.
> Just use std.conv.to!MyEnum(string_without_the prefix).
> Mafi

Thanks Mafi, exactly what I'm looking for :)