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SOLVED: Calling functions

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Why is it so that some functions do not need to be called? For example, when we define the data of a tableview, we define the function cellforrowat, but we do not need to call it, why is this?

3      

Those are functions that the system calls. We supply the behavior that we want to happen when the system calls those functions.

4      

For clarification I would add that in this case for cellForRowAt and other TableView methods it is a TableView that calls your functions. Since you told the TableView your class is its delegate and dataSource and conformed to the protocols. This means that your class needs to have these required methods implemented and TableView can call them.

You can google something like: "swift delegate pattern" to learn more.

4      

Thanks guys

3      

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