On Monday, 8 December 2014 at 20:08:35 UTC, Gary Willoughby wrote:
import std.stdio;
import std.functional;
class Foo(T, alias greater = "a > b") if
(is(typeof(binaryFun!(greater)(T.init, T.init)) == bool))
{
private alias compare = binaryFun!(greater);
public this()
{
writefln("%s", this.compare(2, 1));
}
}
void main(string[] args)
{
auto foo = new Foo!(int, "a < b"); // Works
auto bar = new Foo!(int, delegate(int a, int b){ return a > b;
}); // Linker error.
}
Looks like a compiler bug.
A call without "this." works. When you insert a call without
"this.", other calls with "this." work, too.
A delegate with an implicit parameter type works: `Foo!(int,
delegate(int a, /*!*/ b){ return a > b;})`.