On 04.07.2011 20:12, Zardoz wrote:
On Mon, 04 Jul 2011 19:52:10 +0200, simendsjo wrote:
On 04.07.2011 19:42, simendsjo wrote:
The "in" should be in a block of it's own:
T foo(T)(T a)
if(...) // notice no { here
in {
} body {
}
I of course mean that if should not create a new block.
Thanks !
I thought that the if () needs to make a block. :P
The if is called a template constrain:
http://www.d-programming-language.org/template.html#Constraint
T foo(T)(T a) is a shorthand (I think) for
template foo(T) {
T foo(T a) {
}
}
The constraint refers to the template part:
template foo(T) if(is(T:real)) {
T foo(T a) {
}
}
Because the template only contain a single member, and it's named the
same as the template, you can instantiate it directly as foo(1.2);
If the function was named bar, you'd have to instantiate it yourself:
foo!real.bar(1.2);
