// // main.m // OC9_字符串的内存管理 // // Created by zhangxueming on 15/6/18. // Copyright (c) 2015年 zhangxueming. All rights reserved. // #import <Foundation/Foundation.h> //字符串内存管理, retainCount的值可以不参考, 只需要遵守内存管理法则就行 int main(int argc, const char * argv[]) { @…

// // Dog.h // OC3_选择器 // // Created by zhangxueming on 15/6/16. // Copyright (c) 2015年 zhangxueming. All rights reserved. // #import <Foundation/Foundation.h> @interface Dog : NSObject @property (copy)NSString *name; @property (assign,nonatomic)NSIntege…

// // ProtectedDelegate.h // OC8_代理基本概念 // // Created by zhangxueming on 15/6/24. // Copyright (c) 2015年 zhangxueming. All rights reserved. // #import <Foundation/Foundation.h> @protocol ProtectedDelegate <NSObject> - (void)bark; @end // // Person.…

// // QFString.h // OC6_字符串练习 // // Created by zhangxueming on 15/6/10. // Copyright (c) 2015年 zhangxueming. All rights reserved. // #import <Foundation/Foundation.h> @interface QFString : NSObject //比如输入 @"abcdef"输出@"fedcba" +(NSString *)reveserString:(…

// // main.m // OC10_数组的内存管理 // // Created by zhangxueming on 15/6/18. // Copyright (c) 2015年 zhangxueming. All rights reserved. // #import <Foundation/Foundation.h> #import "Dog.h" int main(int argc, const char * argv[]) { @autoreleasepool { Dog *dog1 =…

// // Dog.h // OC4_实例变量的作用域 // // Created by zhangxueming on 15/6/16. // Copyright (c) 2015年 zhangxueming. All rights reserved. // #import <Foundation/Foundation.h> @interface Dog : NSObject { @protected//受保护的实例变量, 在当前类里面可以直接访问,在类外面不可以直接访问,但是可以通过调用方法间接访问…

// // ProtectedDeleagate.h // OC9_代理正向传值 // // Created by zhangxueming on 15/6/24. // Copyright (c) 2015年 zhangxueming. All rights reserved. // #import <Foundation/Foundation.h> @protocol ProtectedDeleagate <NSObject> - (void)bark:(NSInteger)count;…

// // main.m // OC1_数组创建 // // Created by zhangxueming on 15/6/11. // Copyright (c) 2015年 zhangxueming. All rights reserved. // #import <Foundation/Foundation.h> //NSArray //创建不可变数组对象 //NSMutableArray //创建可变数组对象 //数组中的元素都是对象可以为任意类型的对象 //数组中存储的是对象的引用(对象的地…

// // Dog.h // OC11_自动释放池 // // Created by zhangxueming on 15/6/18. // Copyright (c) 2015年 zhangxueming. All rights reserved. // #import <Foundation/Foundation.h> @interface Dog : NSObject @property (assign, nonatomic)NSInteger age; @end // // Dog.m // O…

// // NSString+Reverse.h // OC5_类别 // // Created by zhangxueming on 15/6/16. // Copyright (c) 2015年 zhangxueming. All rights reserved. // #import <Foundation/Foundation.h> @interface NSString (Reverse) + (NSString *)reverseString:(NSString *)aString; + (…