How Do I Declare A Block in Objective-C?As a local variable: returnType (^blockName)(parameterTypes) = ^returnType(parameters) {...}; As a property: @property (nonatomic, copy, nullability) returnType (^blockName)(parameterTypes); As a method parameter: - (void)someMethodThatTakesABlock:(returnType (^nullability)(parameterTypes))blockName;
