如何删除NSString中的撇号和空格

Question

NSString *str = @"mario's test";
NSString *stringWithoutSpaces = [str stringByReplacingOccurrencesOfString:@" " withString:@""];

使用此功能我可以删除空格，但我还需要删除撇号'：

stringWithoutSpaces = "mariostest"

Answer 1

*stringWithoutSpaces = [[str stringByReplacingOccurrencesOfString:@" " withString:@""]
                             stringByReplacingOccurrencesOfString:@"'" withString:@""];