What would be a do nothing operator for a function returning void?

I want to return nothing inside a function returning v开发者_StackOverflow社区oid. How would I do that?

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You can do one of two things:

1. Structure the flow of the code so that there is no need for a return statement.
2. Place return; statements where you want the function to return control to the caller.

EDIT: To clarify, return; is a statement that returns control to the caller without yielding a value.

That's basically it.

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i think sending a message to nil is a no-op

[nil message]

Sending a message to nil?