删除前缀objective-c mac

Question

如何从NSString中删除前缀"test"？我试过stringByReplacingOccurrencesOfString:但它不是我想要的,因为它是我想要删除的前缀,而不是从字符串的其他出现.

Answer 1

NSString *prefixToRemove = @"test";
NSString *newString = [originalString copy];
if ([originalString hasPrefix:prefixToRemove])
    newString = [originalString substringFromIndex:[prefixToRemove length]];