Access template parameters at runtime
Christophe Travert
travert at phare.normalesup.org
Fri Aug 10 08:39:26 PDT 2012
"Henning Pohl" , dans le message (digitalmars.D:174572), a écrit :
> That is what I was trying first, but I could not make it work.
> Maybe you can show me how it's done?
For example:
import std.stdio;
template TupleToArray(T...)
{
static if (T.length == 1)
{
enum TupleToArray = [T[0]];
}
else
{
enum TupleToArray = TupleToArray!(T[0..$-1]) ~ T[$-1];
}
}
void main()
{
alias TupleToArray!(1, 2, 3) oneTwoThree;
foreach (i; 0..3)
writeln(oneTwoThree[i]);
}
output:
1
2
3
TupleToArray should have proper check to make clean code.
There must be something like that somewhere in phobos, or it should be
added.
--
Christophe
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