remove char from stringstream and append some data

Question

In my code there is a loop that adds sth like that \"number,\" to stringstream. When it ends, I need to extract \',\' add \'}\' and add \'{\' if the loop is to repeated.

Answer 1

I have had this very problem and I found out that you can simply do:

douCoh.seekp(-1, std::ios_base::end);

And the keep inserting data. As others stated, avoiding inserting the bad data in the first place is probably the ideal solution, but in my case was the result of a 3rd party library function, and also I wanted to avoid copying the data to strings.