Function 関数

objc_loadWeak

Loads the object referenced by a weak pointer and returns it. 弱いポインタによって参照されたオブジェクトをロードします、そしてそれを返します。

Declaration 宣言 

id objc_loadWeak(id  _Nullable *location);

Parameters パラメータ

location

The address of the weak pointer.

Return Value 戻り値

The object pointed to by location, or nil if location is nil.

Discussion 解説

This function loads the object referenced by a weak pointer and returns it after retaining and autoreleasing the object. As a result, the object stays alive long enough for the caller to use it. This function is typically used anywhere a __weak variable is used in an expression.

See Also 参照

Using Objective-C Language Features Objective-C言語機能を使う

objc_enumerationMutation
Inserted by the compiler when a mutation is detected during a foreach iteration. ある変異がforeach反復の間に検知される時に、コンパイラによって挿入されます。
objc_setEnumerationMutationHandler
Sets the current mutation handler. 現在の変異ハンドラを設定します。
imp_implementationWithBlock
Creates a pointer to a function that calls the specified block when the method is called. ある関数へのポインターを作成します、それはメソッドが呼び出される時に指定されたブロックを呼び出すものです。
imp_getBlock
Returns the block associated with an IMP that was created using imp_implementationWithBlock.
imp_removeBlock
Disassociates a block from an IMP that was created using imp_implementationWithBlock, and releases the copy of the block that was created.
objc_storeWeak
Stores a new value in a __weak variable.