On 10/12/14 3:46 PM, ketmar via Digitalmars-d-learn wrote:
Hello.
please, how to call template constructor of a class? it's completely
escaped my mind. i.e. i have this class:
class A {
this(alias ent) (string name) {
...
}
}
and i want to do:
void foo () { ... }
auto a = new A!foo("xFn");
yet compiler tells me that
"template instance A!foo A is not a template declaration, it is a class"
yes, i know that i can rewrite constructor to something like this:
this(T) (string name, T fn) if (isCallable!T) {
...
}
and then use autodeduction, but i want the first form! ;-)
Hm... I don't think it's very possible, unless you want to call ctor
directly and not conflate with new (i.e. define a factory function
instead). Unfortunately, some things can only be done within constructors.
At least someone else has found a similar issue before:
https://issues.dlang.org/show_bug.cgi?id=10689
I'm not sure what proper syntax would be, perhaps:
auto a = (new A)!foo("xFn");
A good pattern should be able to be discovered here, to help with the
existing state of affairs...
-Steve
