iOS 之 NSString 去除前后空格和回车键
NSString *string = @" spaces in front and at the end "; NSString *trimmedString = [string stringByTrimmingCharactersInSet: [NSCharacterSet whitespaceAndNewlineCharacterSet]];
NSString *string = @" spaces in front and at the end "; NSString *trimmedString = [string stringByTrimmingCharactersInSet: [NSCharacterSet whitespaceAndNewlineCharacterSet]];