On Wednesday, 7 November 2012 at 14:07:31 UTC, martin wrote:
C++:
void f(T& a) { // for lvalues
this->resource = a.resource;
a.resetResource();
}
void f(T&& a) { // for rvalues (moved)
this->resource = a.resource;
a.resetResource();
}
D:
void f(ref T a) { // for lvalues
this.resource = a.resource;
a.resetResource();
}
void f(T a) { // rvalue argument is not copied, but moved
this.resource = a.resource;
a.resetResource();
}
You could probably get away with a single-line overload, both in
C++ and D:
C++:
void f(T& a) { // for lvalues
// convert a to mutable rvalue reference and
// invoke the main overload f(T&&)
f(std::move(a));
}
D:
void f(T a) { // rvalue argument is not copied, but moved
// the original argument is now named a (an lvalue)
// invoke the main overload f(ref T)
f(a);
}