NSString 去掉前后空格或回车符

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

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