Michael Brown 9/2/2017

Swift and KVO context variables

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The article details a specific crash in Swift when using Key-Value Observing (KVO) with the .initial option, caused by simultaneous access violations to a context variable. It explains the problem's root in how Swift bridges pointers and offers a solution based on an Apple Swift Blog post: using global or static variables for the KVO context to ensure a persistent, unique pointer and prevent runtime crashes.

Swift and KVO context variables

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