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

You can seek the stringstream and go back 1 character, using stringstream::seekp. Note that it does not remove the last character, but only moves the write head. This is sufficient in this case, as we overwrite the last character with an }.

douCoh << '{';
for(unsigned int i=0;i