Tuple slicing fails

[Erik Baklund]

Hi,

I am trying to understand tuples.
Does anybody know why line 11 below fail?
Is it conceptually wrong or is it a compiler glitch?

Erik

 1	import std.stdio;
 2
 3
 4	template Tuple1(E...) 
 5	{ 
 6		alias E Tuple1; // Works
 7	}	
 8
 9	template Tuple2(E...) 
10	{ 
11		alias E[0..length] Tuple2;  // Sematicly the same (?) but fails
12	}	
13
14	int main (char[][] args)
15	{
16		writefln(Tuple1!(3, 7L, 6.8));   
17		writefln(Tuple2!(3, 7L, 6.8));   
18
19		return 0;
20	}


a.d(11): tuple E is used as a type
a.d(11): Error: can only slice tuple types, not void
a.d(17): template instance a.Tuple2!(3,7L,6.8) error instantiating