Weak references in the Objective-c

Weak references are too weak to be able to keep in touch with a request for space through this reference. As an example,

@interface Classa:nsobject

@porperty (nonatomic,weak) ClassA * TEMPCLASS1;

@property (Nonatomic,strong) ClassA * TEMPCLASS2;

-(void) test;

@end

@implement ClassA

-(void) test

{

Self.tempclass1 = [ClassA new]; Since TempClass1 is a weak reference, the reference is broken after the application is complete, and Self.tempclass1 is nil.

Self.tempclass2 = Self.tempclass1; //

Self.tempclass2 = [ClassA new]; This is OK TEMPCLASS3 is a strong reference can normally apply for a piece of space

Self.tempclass1 = Self.tempclass2; After this assignment, TempClass1 also has a goal, but if Self.tempclass2=nil, then the space will still disappear, so this time TempClass1 is still nil

}

@end

Weak references in the Objective-c