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What's the difference between formal and informal protocols in Objective-C?

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南方客
南方客 2021-01-31 03:04

What\'s the difference between formal and informal protocols in Objective-C?

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  • -上瘾入骨i
    -上瘾入骨i (楼主)
    2021-01-31 03:31

    Informal Protocol : Category (Implementations are Optional)

    Formal Protocol : Extension (Implementations are Optional and required)

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