I'm writing a collection with functionality for membership checking. I
thought it would be nice to use the "in" operator. In the docs for
std.collections I surmise that this is the standard way to go. From the
source code, I see there's no special opIn, but that it can be done
with the more general...
bool opBinary(string op)(T k) if (op == "in") {
...
}
Here T is, of course, a compile-time argument of the surrounding struct
or class.
So ... this is used in the the Phobos source in the DMD 2.052 distro
(if I'm not mistaken), but I can't get dmd 2.052 to accept it? I keep
getting the error message "Error: rvalue of in expression must be an
associative array, not Foo!(uint)".
I guess either that this is a recent feature -- I didn't see it
mentioned in Andrei's book -- and that my Phobos source is too recent
for my dmd ... or that I'm doing something wrong elsewhere in my code,
preventing the operator overloading to take force.
Suggestions/solutions?-)
--
Magnus Lie Hetland
http://hetland.org
