error in return statement

[downs]

zorran wrote:
> possibly error in return statement:
> ====
> bool fn1(Object o1, Object o2 ) {
> 	return o1.opEquals(o2); // opEquals return int
> }
> ====
> 
> compiler writes:
> "Error: cannot implicitly convert expression (o1.opEquals(o2)) of type int to bool"
> 
> But:
> ====
> bool fn2() {
> 	return 1;
> }
> ====
> compile ok!
> 
> DMD 1.039

A quick way around this is the !! "operator", i.e. double negotiation. "return !!o1.opEquals(o2); "

It should be clear how this works. If not, try to think of !!a as !(!(a)).