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iOS

Posted by Eric Wolff
Eric Wolff
1,822 Points

Why are some methods called with [ ] while you can use ( ) for others

I have been looking around online and I haven't found the answer to this question. Most of the time a method can be called using [ ] while other times I will get a compiler error and it turns out I need to call the method using ( ). Can someone explain why I would use one way over the other way?

2 Answers

Stone Preston
Stone Preston
42,016 Points

Objective C methods are called using square brackets [ ] (or sometimes dot notation for example in setter/getter method calls). C functions (for instance the CGRectMake() function) must be called using parenthesis ( )

Eric Wolff
Eric Wolff
1,822 Points
Eric Wolff
Eric Wolff
1,822 Points

Oh that makes sense because Objective C is an extension of C.

Thanks Stone!