objc-block-syntax.md

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default	Objective-C guide: block syntax	A quick reference guide for block syntax in Objective-C.	/fuckingblocksyntax/ /goshdarnblocksyntax/

As a local variable

returnType (^blockName)(parameterTypes) = ^returnType(parameters) {...};

As a property

@property (nonatomic, copy, nullability) returnType (^blockName)(parameterTypes);

As a method parameter

- (void)methodThatTakesABlock:(returnType (^nullability)(parameterTypes))blockName;

As an argument to a method call

[someObject methodThatTakesABlock:^returnType (parameters) {...}];

As a typedef

typedef returnType (^TypeName)(parameterTypes);
TypeName blockName = ^returnType(parameters) {...};