objective-c-nullability

Pointer is missing a nullability type specifier

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You can use the following macros around blocks of declarations (functions and variables) in objective c headers: NS_ASSUME_NONNULL_BEGIN NS_ASSUME_NONNULL_END You need to then add nullable annotations for references that can be nil within that block. This applies to both function parameters and variable declarations. As in: @interface SMLBaseUserDetailsVC : UIViewController < UICollectionViewDelegate> NS_ASSUME_NONNULL_BEGIN @property (nonatomic, … Read more

Difference between nullable, __nullable and _Nullable in Objective-C

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From the clang documentation: The nullability (type) qualifiers express whether a value of a given pointer type can be null (the _Nullable qualifier), doesn’t have a defined meaning for null (the _Nonnull qualifier), or for which the purpose of null is unclear (the _Null_unspecified qualifier). Because nullability qualifiers are expressed within the type system, they … Read more

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