On Tuesday, 24 December 2019 at 07:37:02 UTC, Rumbu wrote:
I am trying to create an array of functions inside a struct.
struct S {
void f1() {}
void f2() {}
alias Func = void function();
immutable Func[2] = [&f1, &f2]
}
What I got: Error: non-constant expression '&f1'
Tried also with delegates (since I am in a struct context but I
got: no `this` to create delegate `f1`.
So, is there any way to have an array of functions without
adding them at runtime?
If you don't need runtime, probably like this:
´´´
import std;
void f1(S s) {assert(1);}
void f2(S s) {assert(1);}
alias field = AliasSeq!(f1, f2);
struct S{}
void main()
{
S s;
field[0](s);
}
´´´
Don't know why UCFS doesn't work in this case though.
Maybe, this is also helpful:
https://forum.dlang.org/post/mailman.2415.1354291433.5162.digitalmars-d-le...@puremagic.com
