componentsSeparatedByCharactersInSet简单代码拆分指定字符

问题:

有字符串“1~2^3" ，我拆分为 "1", "2" 和 "3"

实现方法:

NSString *str = @"1~2^3";
NSArray *arr = [str componentsSeparatedByCharactersInSet:[NSCharacterSet
characterSetWithCharactersInString:@"^~"]];
NSLog(@"%@", arr);