//
// Dog.h
// OC2_点语法(属性关键字)
//
// Created by zhangxueming on 15/6/16.
// Copyright (c) 2015年 zhangxueming. All rights reserved.
//
#import <Foundation/Foundation.h>
@interface Dog : NSObject
//属性关键字
//assgin(缺省)直接赋值 //基本类型 代理对象指针
//retain 先release 再 retain //除了基本类型 字符串类型 代理对象, 剩下的通常用 retain
//copy 先release 再 copy //字符串对象用copy
//atomic(缺省),nonatomic
//原子性的 非原子性的
//readwrite(缺省) 展开对应的setter getter方法
//readonly 只展开对应的getter方法
//setter getter 修改setter getter方法的方法名
//点语法访问不受影响
//经典访问要使用新的方法名
@property (assign,atomic)NSInteger age;
@property (assign, nonatomic, readwrite)float weight;
@property (copy,nonatomic)NSString *
name;
@property (assign,setter=setNewNumber:,getter=
getNumber) NSInteger number;
@end
//
// Dog.m
// OC2_点语法(属性关键字)
//
// Created by zhangxueming on 15/6/16.
// Copyright (c) 2015年 zhangxueming. All rights reserved.
//
#import "Dog.h"
@implementation Dog
@synthesize age =
_age;
-
(NSInteger)age
{
NSLog(@"getter");
return _age;
}
- (
void)setAge:(NSInteger)age
{
NSLog(@"setter");
_age =
age;
}
@end
//
// main.m
// OC2_点语法(属性关键字)
//
// Created by zhangxueming on 15/6/16.
// Copyright (c) 2015年 zhangxueming. All rights reserved.
//
#import <Foundation/Foundation.h>
#import "Dog.h"
int main(
int argc,
const char *
argv[]) {
@autoreleasepool {
Dog *dog =
[[Dog alloc] init];
dog.name=
@"小白";
dog.age =
12;
dog.weight =
34.5;
NSLog(@"name = %@ age = %li weight = %.2f", dog.name, dog.age, dog.weight);
dog.number =
100;
NSLog(@"number = %li", dog.number);
[dog setNewNumber:200];
NSLog(@"number = %li", [dog getNumber]);
}
return 0;
}
转载于:https://www.cnblogs.com/0515offer/p/4581198.html
