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returnType (^blockName)(parameterTypes) = ^returnType(parameters) {...};@property (nonatomic, copy) returnType (^blockName)(parameterTypes);- (void)someMethodThatTakesABlock:(returnType (^)(parameterTypes))blockName;[someObject someMethodThatTakesABlock:^returnType (parameters) {...}];typedef returnType (^TypeName)(parameterTypes);
TypeName blockName = ^returnType(parameters) {...};How Do I Declare A Block in Objective-C?
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原文地址：http://www.cnblogs.com/iamjjh/p/4742808.html
