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详细介绍Objective-C的Ownership Qualifier，帮助更好理解ARC是怎么回事，实现细节；绝对算是专业级的讲解，找工作前理清思路、提高自信的必需品。 With ARC, ‘id’ and object type variables must have one of the following four ownership qualifiers: __strong __weak __unsafe_unretained __autoreleasing

ARC Rules To write and compile source code for ARC, you have to take care of a few things. Just by following the rules in the list below, you can write source code for an ARC-enabled environment wi

__strong ownership qualifier Let’s see how the variables that are qualified with __strong work, using NSMutableArray class method “array” as an example. We see under the hood of calling the method

__autoreleasing ownership qualifier Assigning an object to any variables qualified with __autoreleasing is equivalent to calling the autorelease method in a non-ARC environment. Let’s see how it

__weak ownership qualifier Next, we learn about the __weak ownership qualifier. We show what happens when an object is disposed of or when a newly created object is assigned and how an object is ad

Array I explained the ownership specifiers with ‘id’ or object type variables. In this section, I explain how we can use the specifiers with arrays. The following source code shows how to use a

Returning a Result as the Argument 在希望通过函数的参数返回Objective-C 对象