iOS-字符串拼接

2021-01-24 09:33:57

objective-c 字符串拼接的三个方法

// //  main.m // /* 将两个字符串 NSString * str1 = @"123"; NSString * str2 = @"abc"; 拼接成⼀一个完整的字符 串。 */ #import <Foundation/Foundation.h> int main(int argc, const char * argv[]) {    /*方法一*/     //    NSString * str1 = @"123"; //    NSString * str2 = @"abc"; //     //    NSString * str3 =[[NSString alloc]initWithFormat:@"%@%@",str1,str2]; //     //    NSLog(@"%@",str3);        /*方法二*/        NSString * str1 = @"123";    NSString * str2 = [str1 stringByAppendingString:@"abc"];    NSLog(@"%@",str2);     }


  • 2017-11-10 00:06:15

    CORS: credentials mode is 'include'

    XMLHttpRequest cannot load http://localhost/Foo.API/token. The value of the 'Access-Control-Allow-Origin' header in the response must not be the wildcard '*' when the request's credentials mode is 'include'. Origin 'http://localhost:5000' is therefore not allowed access. The credentials mode of requests initiated by the XMLHttpRequest is controlled by the withCredentials attribute.

  • 2017-11-19 00:17:51

    Java如何获取Date的“昨天”与“明天”示例代码

    最近在做项目的时候用到Date和Calendar比较多,而且用到的方式也比较全,突然想到一个问题,Java如何获取Date的"昨天"与"明天",也就是前一天和后一天呢?思考后写出了方法,想着万一以后用到,就总结出来,也方便有需要的朋友们参考借鉴,下面来一起看看吧。