Nick Sabalausky schrieb:
A trivial thing, but something I've been wondering about for awhile:
Function parameter syntax:
Declare: foo(bar)
Call: foo(bar)
Template parameter syntax in C++/C#/etc:
Declare: foo<bar>
Instantiate: foo<bar>
Template parameter syntax in D:
Declare: foo(bar)
Instantiate: foo!(bar)
Why the difference in syntax between declaring and instantiating? Why not
use the exclamation for declaration too? Would that create a grammar
ambiguity? Some other reason? No particular reason?
Obviously it's not a big issue, just curious.
because:
import std.stdio;
void fun(int X=3)(int a = 4){
writefln("X==%s a==%s", X, a);
}
void main() {
fun!(1)(2); // X==1, a==2
fun(2); // X==3, a==2
fun!(2); // X==2, a==4
}
Cheers,
- Daniel
