NSCharacterSet类提供了一种简单而有效的方式来对字符串进行分割和筛选。下面是一些使用NSCharacterSet的示例:
NSString *str = @"Hello,World";
NSCharacterSet *separator = [NSCharacterSet characterSetWithCharactersInString:@","];
NSArray *components = [str componentsSeparatedByCharactersInSet:separator];
NSLog(@"%@", components); // 输出: [@"Hello", @"World"]
NSString *str = @"Hello,World";
NSCharacterSet *charactersToRemove = [NSCharacterSet characterSetWithCharactersInString:@","];
NSString *result = [[str componentsSeparatedByCharactersInSet:charactersToRemove] componentsJoinedByString:@""];
NSLog(@"%@", result); // 输出: @"HelloWorld"
NSString *str = @"Hello,World";
NSCharacterSet *characterSet = [NSCharacterSet characterSetWithCharactersInString:@"o"];
if ([str rangeOfCharacterFromSet:characterSet].location != NSNotFound) {
NSLog(@"包含字符'o'");
} else {
NSLog(@"不包含字符'o'");
}
通过以上示例,可以看到NSCharacterSet类是一个非常有用的工具,可以帮助我们快速分割和筛选字符串。
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