ObjectiveC: if (obj) {…} AND if (obj != nil) {…}, which is better?

Question

I\'ve seen a lot of ObjC code which do:

obj = [[SomeObject alloc] init];
if (obj) {
/// ...
}

but as I understood it, the value inside () i

Answer 1

0 indicates FALSE 1 indicates TRUE

Close. In C (and Objective-C), a 0 evaluates to false, and a non-zero evaluates to true. So a nil (or NULL) pointer is "false", but any non-nil pointer is "true".

Your examples are essentially equivalent; neither is "better" than the other (unless you or your codebase has a style preference).