从NSString中删除NSCharacterSet中的字符 [英] Remove characters in NSCharacterSet from NSString

问题描述

我有一个NSCharacterSet，其中包含我要从我的NSString中删除的所有字符.

I have an NSCharacterSet which contains all the characters I want to remove from my NSString.

我该怎么办?

推荐答案

如果您不太担心效率，则简单的方法是[[myString componentsSeparatedByCharactersInSet:myCharacterSet] componentsJoinedByString:@""].

If you're not too worried about efficiency, a simple way would be [[myString componentsSeparatedByCharactersInSet:myCharacterSet] componentsJoinedByString:@""].

否则，您可以循环遍历这些字符，将不在集合中的字符附加到新字符串上.如果这样做，请记住在构建结果时使用NSMutableString作为结果.

Otherwise, you could run through the characters in a loop, appending ones that weren't in the set onto a new string. If you do it that way, remember to use an NSMutableString for your result as you're building it up.

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