在objective-c中去掉字符串前后空格的方法(类似于C#中的trim方法)如下:

NSString *string = @" spaces in front and at the end "; 
NSString *trimmedString = [string stringByTrimmingCharactersInSet:
[NSCharacterSet whitespaceAndNewlineCharacterSet]];
NSLog(trimmedString)

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