iOS description 函数一劳永逸的写法

最新推荐文章于 2022-06-01 13:35:20 发布

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本文介绍了一个使用Objective-C实现的数据模型类，该类利用了MJExtension框架来简化属性的管理和打印。通过重写description方法，文章展示了如何优雅地输出对象的所有属性。

//
//  DataBaseModel.m
//  test_GCDAsyncSocket_01
//
//  Created by jeffasd on 16/9/9.
//  Copyright © 2016年 jeffasd. All rights reserved.
//

#import "DataBaseModel.h"
#import "MJExtension.h"

@implementation DataBaseModel

//MJExtensionLogAllProperties

-(NSString *)description
{
    NSDictionary *dic = [self mj_keyValues];
    __block NSString *str = [NSString string];
    [dic enumerateKeysAndObjectsWithOptions:NSEnumerationReverse usingBlock:^(id  _Nonnull key, id  _Nonnull obj, BOOL * _Nonnull stop) {
        if ([dic.allKeys.firstObject isEqualToString:key]) {
            str = [str stringByAppendingString:[NSString stringWithFormat:@"\r<%@-%p>\r", [self class], self]];
            str = [str stringByAppendingString:[NSString stringWithFormat:@"%@ = %@\r", key, obj]];
        }else{
            str = [str stringByAppendingString:[NSString stringWithFormat:@"%@ = %@\r", key, obj]];
            if ([dic.allKeys.lastObject isEqualToString:key]) {
                str = [str substringWithRange:NSMakeRange(0, str.length - 1)];
            }
        }
    }];
    return str;
}

@end