A compiler is a computer program (or set of programs) that transforms source code written in a programming language (the source language) into another computer language (the target language, often having a binary form known as object code).

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Not specifying a return in a function, good or bad?

I have coded like this many times, and I've never encountered an issue, but the compiler always warns when it expects a return and there is none. For instance, look at this: -(NSString ...