On Mon, Jul 19, 2010 at 22:01, torhu <no@spam.invalid> wrote:

I wasn't able to make it work.

Me too :(

The compiler probably sees delegates as something that just can't be created at compile time, since no runtime contexts exist then. Which is reasonable.

Can you initialize pointers in general, at compile-time?

Maybe one of those templates that turn functions into delegates will work?

I had the same idea and tried to use std.functional.toDelegate, but to no avail.

enum moo = () {return 1;};

struct foo {
int delegate( ) dg = toDelegate(moo);
}

Error: forward reference to inferred return type of function call toDelegate(delegate int()|

int moo() { return 1;}

struct foo {
int delegate( ) dg = toDelegate(&moo);
}

Error: forward reference to inferred return type of function call toDelegate((& moo))|

'auto' strikes again :(
I came to hate these forward reference errors. That and the fact that auto functions do not appear in the docs, that's enough for me to avoid auto as much as possible for functions.

Otherwise I guess you're back to using a factory function for initializing instances.

Maybe just checking for null pointers before calling those delegates ends up being the easiest solution.

Philippe