if-let statement in Objective-C

I just found an equivalent to Swift’s if-let construct, and thought to share it 🙂

Swift:

if let result = computeResult() {
    // do something with result
}

Objective-C:

for(SomeClass *result = [self computeResult]; result != nil; result = nil) {
    // do something with result
}

You no longer need an extra line to declare the variable, and also the variable is visible only inside the if branch. Just like in Swift 🙂