On 04/06/2017 11:37 AM, Russel Winder via Digitalmars-d-learn wrote:
I am used to a function name being a reference to the function body,
cf. lots of other languages. However D rejects:
iterative
as a thing can put in an array, it requires:
(n) => iterative(n)
Presumably this introduces inefficiency at run time? I.e. the extra
level of indirection is not compiled away?
I think it's just a design choice. C implicitly converts the name of the
function to a pointer to that function. D requires the explicit & operator:
alias Func = int function(int);
int foo(int i) {
return i;
}
void main() {
Func[] funcs = [ &foo ];
}
Close to what you mentioned, name of the function can be used as an
alias template parameter:
void bar(alias func)() {
func(42);
}
int foo(int i) {
return i;
}
void main() {
bar!foo();
}
Ali
