//
// Dog.h
// OC4_内存管理法则
//
// Created by zhangxueming on 15/6/18.
// Copyright (c) 2015年 zhangxueming. All rights reserved.
//
#import <Foundation/Foundation.h>
@interface Dog : NSObject
@end
//
// Dog.m
// OC4_内存管理法则
//
// Created by zhangxueming on 15/6/18.
// Copyright (c) 2015年 zhangxueming. All rights reserved.
//
#import "Dog.h"
@implementation Dog
@end
//
// main.m
// OC4_内存管理法则
//
// Created by zhangxueming on 15/6/18.
// Copyright (c) 2015年 zhangxueming. All rights reserved.
//
#import <Foundation/Foundation.h>
#import "Dog.h"
//对于引用计数来说，有一套内存管理的黄金法则:
//The basic rule to apply is everything that increases the reference counter with alloc, [mutable]copy[withZone:] or retain is in charge of the corresponding [auto]release.
//如果对一个对象使用了alloc、[mutable]copy、retain，那么你必须使用相应的release或者autorelease。
//通俗一点的说法就是谁污染谁治理，谁杀的谁埋。
int main(
int argc,
const char *
argv[]) {
@autoreleasepool {
Dog *xiaoHei = [[Dog alloc] init];
//1
Dog *xiaoBai =
[xiaoHei retain];
Dog *xiaoHui = [xiaoHei copy];
//copy用于字符串,不能用于对象,所有这里报错.
[xiaoHei release];
[xiaoBai release];
[xiaoHui autorelease];
}
return 0;
}
转载于:https://www.cnblogs.com/0515offer/p/4586950.html
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