On 01/29/2015 09:48 AM, rumbu wrote:
bool opEquals(Object obj, int value)
{
//do something to compare them
return false;
}
void main(string[] args)
{
Object obj;
if (obj == 12) {}
//ERROR function object.Object.opEquals (Object o) is not callable
using argument types (int)
}
According to paragraph (2) -
http://dlang.org/operatoroverloading.html#eqcmp), the compiler must try
obj.opEquals(12) and 12.opEquals(obj) but this is not happening.
Is there any other way to overload the equality operator? (except
overriding opEquals in each class intended to be compared with an integer)
In D, operator overloading is only for user-defined types and through
their member functions.
class C
{
int value;
bool opEquals(int value)
{
return value == this.value;
}
}
void main(string[] args)
{
auto c = new C;
if (c == 12) {}
}
Ali
