Personally, for readability purpose, this sounds a like a good idea. It is indeed (at least for me) harder to read a condition that has negation: if(!some-pred

Personally, for readability purpose, this sounds a like a good idea. It is indeed (at least for me) harder to read a condition that has negation: if(!some-predicate) Maybe it's because you have to do the negation mentally. But more ideally, it should be done with polymorphism or similar rather than using if..else.