iphone - Objective-C - 对 NSMutableStrings 使用 deleteCharactersInRange

Question

如何使用 deleteCharactersInRange 删除 NSMutableString 的第一个字符？

Answer 1

没那么难......

NSMutableString *a = [NSMutableString stringWithString:@"aString"];
NSRange range;
range.location = 0;
range.length = 1;
[a deleteCharactersInRange:range];

您可以像这样缩短范围创建:

NSRange range = {0,1}; // edit: of course 0,1 instead of 1,0, thanks Omar