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iOS Objective-C Basics (Retired) Advanced Objective-C Memory Management

AHMET GÜLERER
AHMET GÜLERER
1,597 Points
Posted by AHMET GÜLERER
AHMET GÜLERER
1,597 Points

Why still weak reference is there???

Please look at the code and tell me why weakArray is still there?

import <Foundation/Foundation.h>

@interface clsAhmet : NSObject

@property (nonatomic,weak) NSArray *weakArray; @property (nonatomic,strong) NSArray *strongArray;

-(void) calis;

@end

import "clsAhmet.h"

@implementation clsAhmet

-(void) calis

{ self.strongArray = @[@"strongArray1",@"strongArray2"];

self.weakArray = self.strongArray;



self.strongArray = nil;

if(self.weakArray != nil)
{
    NSLog(@"weakArray halen nil degil");
}

}

@end

output:

2014-06-25 01:03:52.545 StrongvsWeak[2216:303] weakArray halen nil degil Program ended with exit code: 0

2 Answers

Alaattin CATE
Alaattin CATE
2,865 Points
Alaattin CATE
Alaattin CATE
2,865 Points

You should use this code

self.weakArray = [[NSArray alloc] initWithArray:self.strongArray];

Instead of this code

self.weakArray = self.strongArray;
AHMET GÜLERER
AHMET GÜLERER
1,597 Points
AHMET GÜLERER
AHMET GÜLERER
1,597 Points

Thanks for answer. That is useful.