NSString简单操作三例

转自：http://blog.cnrainbird.com/index.php/2012/04/27/nsstring_jian_dan_cao_zuo_san_li/

字符串操作估计是每个语言里必不可少的吧。今天就说说关于NSString操作的三个小东东
1.NSString去首尾空格

  NSString *_textStr = @" Rainbird's Blog \n ";
  NSLog(@"去首尾:%@",[_textStr stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceCharacterSet]]);

2.NSString去换行符

  NSString *_textStr = @" Rainbird's Blog \n ";
  NSLog(@"去换行:%@",[_textStr stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]]);

3.NSString去掉全部空格

  NSString *_textStr = @" Rainbird's Blog \n ";
  NSLog(@"全部去掉:%@",[_textStr stringByReplacingOccurrencesOfString:@" " withString:@""]);