C++博客-天之骄子

C++博客-天之骄子http://www.cppblog.com/tianzhijiaozino1/zh-cnTue, 07 Apr 2026 23:44:39 GMTTue, 07 Apr 2026 23:44:39 GMT60IOS中各种数据类型转换http://www.cppblog.com/tianzhijiaozino1/archive/2014/04/04/206464.html天之骄子'天之骄子'Fri, 04 Apr 2014 02:27:00 GMThttp://www.cppblog.com/tianzhijiaozino1/archive/2014/04/04/206464.htmlhttp://www.cppblog.com/tianzhijiaozino1/comments/206464.htmlhttp://www.cppblog.com/tianzhijiaozino1/archive/2014/04/04/206464.html#Feedback0http://www.cppblog.com/tianzhijiaozino1/comments/commentRss/206464.htmlhttp://www.cppblog.com/tianzhijiaozino1/services/trackbacks/206464.html1.截取字符串

NSString*string =@"sdfsfsfsAdfsdf";
string = [string substringToIndex:7];//截取下标7之后的字符串
NSLog(@"截取的值为：%@",string);
[string substringFromIndex:2];//截取下标2之前的字符串
NSLog(@"截取的值为：%@",string);

2.匹配字符串
NSString*string =@"sdfsfsfsAdfsdf";
NSRangerange = [stringrangeOfString:@"f"];//匹配得到的下标
NSLog(@"rang:%@",NSStringFromRange(range));
string = [string substringWithRange:range];//截取范围类的字符串
NSLog(@"截取的值为：%@",string);

3.分隔字符串
NSString*string =@"sdfsfsfsAdfsdf";

NSArray *array = [string componentsSeparatedByString:@"A"]; //从字符A中分隔成2个元素的数组
NSLog(@"array:%@",array); //结果是adfsfsfs和dfsdf

小写字符转为大写字符

1 NSString *str = @"mobile developer tips";
2
3 // Convert string to uppercase
4 NSString *upperStr = [str uppercaseStringWithLocale:[NSLocale currentLocale]];
5 NSLog(@"upperStr: %@", upperStr);
6
7 // Convert string to caps
8 NSString *capStr = [upperStr capitalizedStringWithLocale:[NSLocale currentLocale]];
9 NSLog(@"capStr: %@", capStr);
10
11 // Convert string to lowercase
12 NSString *lowerStr = [capStr lowercaseStringWithLocale:[NSLocale currentLocale]];
13 NSLog(@"lowerStr: %@", lowerStr);

天之骄子' 2014-04-04 10:27 发表评论

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