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Asked: 2026-06-16T04:08:03+00:00

I’m seeing two different implementations… __weak UIDataType *weakSelf = self; and UIDataType __weak *weakSelf

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I’m seeing two different implementations…

__weak UIDataType *weakSelf = self;

and

UIDataType __weak *weakSelf = self;

Yet they both seems to work. Is there a difference in terms of what happens under the hood?

Thanks in advance for your wisdom!

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1 Answer

  1. Editorial Team

    There is no difference. Since __weak can only apply to pointer-to-object types, the compiler recognizes that there is only one meaning that makes sense for all of the following:

    __weak UIDataType *weakSelf;
UIDataType __weak *weakSelf;
UIDataType * __weak weakSelf;

    The same applies to the other ownership qualifiers (__strong, __autoreleasing, etc.)

    If you’re comfortable reading technical specifications of programming languages, you can read more about it here: http://clang.llvm.org/docs/AutomaticReferenceCounting.html#spelling.

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