Hi everybody,

I just discover ansi-strings (long strings) a couple of months ago, and I'm very happy with them. They help me a lot in everything I do. But I found that if I access the last character of it, like s[length(s)]:='A'; sometimes I get an access violation. Why is that? If it's because I can't do that due to the internals of ansistrings, how should I do to change the last character of the string?

thanks, Ivan

hi Ivan,

try the following piece of code:

var
  S: String;
  S := '';  // make S empty
  S[Length(S)] := 'a';

This results in an access violation, because, AFAIK, an empty ansi-string actually has no space allocated, but is a nil pointer. Make sure that your strings aren't empty before changing the last character (if the string is empty, there is no last character). Hope this helps.

Anton Tichawa