On Tue, Nov 10, 2020 at 11:55 AM Max Samukha via Digitalmars-d-learn <
[email protected]> wrote:
> We can get the compile time equivalent of a member function's
> address by applying '&' to the function in a static context:
>
> struct S {
> void foo() {}
> }
>
> enum pfoo = &S.foo; // ok
>
> void main() {
> // now we can use the pointer to create, for example, a
> delegate
> S s;
> void delegate() dg;
> dg.ptr = &s;
> dg.funcptr = pfoo;
> dg();
> }
>
> However, we can't do that to a nested function:
>
> void main() {
> void foo() {
> }
> enum pfoo = &foo; // weird kind of an enum delegate;
> pfoo.funcptr can't be accessed at compile time.
> }
>
> Is there a way to get a pointer to a non-static nested function?
>
non static nested function is a delegate, so you can just assign it to
delegate like I have posted or you can du this:
import std.stdio;
void main() {
void foo() {
writeln("It works as expected");
}
enum pfoo = &foo;
void delegate() dg;
dg.ptr = pfoo.ptr;
dg.funcptr = pfoo.funcptr;
dg();
}
