Learning iOS Development: A Hands-on Guide to the Fundamentals of iOS Programming

Using Blocks

You call blocks in much the same way you call functions. For a named block, this works just as you would expect:

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<ReturnVariable> = <BlockName>(<Arguments>);

ReturnVariable is an optional variable for holding the value returned by a block. If the block has no return value, you omit both ReturnVariable and the equals sign.

BlockName is the symbol used for calling the block.

Arguments is an optional list ...