enum of tuples

[Van de Bugger]

BTW, I use DMD64 D Compiler v2.060 on Fedora 17. ldc2 compiler 
(LLVM D Compiler LDC trunk, based on DMD v2.059 and LLVM 3.0) 
produces similar results:

$ ldc2 -c -w enum_of_tuples.d
enum_of_tuples.d(5): Error: template 
std.typecons.Tuple!(int,"v").Tuple.opCmp does not match any 
function template declaration
/usr/include/d/std/typecons.d(422): Error: template 
std.typecons.Tuple!(int,"v").Tuple.opCmp(R) if (isTuple!(R)) 
cannot deduce template function from argument types !()(E)
enum_of_tuples.d(5): Error: template 
std.typecons.Tuple!(int,"v").Tuple.opCmp does not match any 
function template declaration
/usr/include/d/std/typecons.d(422): Error: template 
std.typecons.Tuple!(int,"v").Tuple.opCmp(R) if (isTuple!(R)) 
cannot deduce template function from argument types !()(E)