On 07/19/2012 06:09 PM, Ellery Newcomer wrote:
On 07/19/2012 02:51 AM, Artur Skawina wrote:
Range!Node opSlice() { return Range!Node(first); }
Range!(const Node) opSlice() const { return Range!(const Node)(first); }
anyone mind cluing me in on why this is possible?
It is the same as in C++. Considering the hidden non-const this and
const this parameters, one of the member functions is a better match for
each call:
import std.stdio;
struct S
{
void foo(string name)
{
writeln("Called on ", name);
assert(typeid(this) == typeid(S));
}
void foo(string name) const
{
writeln("Called on ", name);
assert(typeid(this) == typeid(const S));
}
}
void main()
{
auto a = S();
const b = S();
a.foo("a"); // matches non-const foo()
b.foo("b"); // matches const foo()
}
The output:
Called on a
Called on b
Ali