string xcode 从字符串中删除最后一个字符
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xcode cut last characters from string
提问by DennisW83
I am working on a Xcodeprogram and need to cut the last 5 characters from a string.
我正在开发一个Xcode程序，需要从字符串中删除最后 5 个字符。
Does anybody know how to cut the last 5 characters from a NSString?
有人知道如何从 a 中删除最后 5 个字符NSString吗？
回答by Philip Kramer
just looked for it my self few minutes ago
几分钟前我自己找的
NSString *str = @"1234567890";
NSString *newStr;
newStr = [str substringToIndex:[str length]-5];
NSLog(@"%@", newStr);
回答by Heider Sati
I hope it's not too late for this answer:
我希望这个答案还为时不晚：
NSString *str = @"1234567890";
NSString *newStr;
newStr = [str substringWithRange:NSMakeRange(str.length -1, 1)];
NSLog(@"%@", newStr);
Although you provided a string of "1234567889" and the above code should work fine, however, in real life if it's a different string then please check to ensure that it's not empty before doing the above, otherwise, str.length would return -1 causing an error.
尽管您提供了一个字符串“1234567889”并且上面的代码应该可以正常工作，但是，在现实生活中，如果它是一个不同的字符串，那么请在执行上述操作之前检查以确保它不是空的，否则 str.length 将返回 -1导致错误。
I hope this helps.
我希望这有帮助。
Kind Regards, Heider Sati
亲切的问候，海德·萨蒂
