Object c的点语法

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简单一句话：Object c的点语法是在建立在有get 和set 的基础上面的，可以实现和java的点语法类似的，直接调用，而不用——》来调用了

person.h

////  Person.h//  DotDemo////  Created by 千 on 16/9/13.//  Copyright © 2016年 kodulf. All rights reserved.//#import <Foundation/Foundation.h>@interface Person : NSObject{    @public    NSString *_name;    CGFloat _age;}-(void)setName:(NSString *)newName;-(void)setAge:(CGFloat)newAge;-(CGFloat)age;-(NSString *)name;@end

person.m

////  Person.m//  DotDemo////  Created by 千 on 16/9/13.//  Copyright © 2016年 kodulf. All rights reserved.//#import "Person.h"@implementation Person-(void)setName:(NSString *)newName{    _name = newName;}-(void)setAge:(CGFloat)newAge{    _age = newAge;}-(NSString *)name{    return _name;}-(CGFloat)age{    return _age;}- (NSString *)description{    return [NSString stringWithFormat:@"name=%@,age=%f",_name,_age];}@end

main.m

////  main.m//  DotDemo////  Created by 千 on 16/9/13.//  Copyright © 2016年 kodulf. All rights reserved.//#import <Foundation/Foundation.h>#import "Person.h"int main(int argc, const char * argv[]) {    @autoreleasepool {        // insert code here...        NSLog(@"Hello, World!");                Person *person=[Person new];        //点语法的使用的前提是必须要有get和set方法        person.name=@"hello ";        person.age = 4.5f;        NSLog(@" name =%@",person.name) ;        NSLog(@"%@",person);            }    return 0;}

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