Harvard Business School of Echec - cpp - Commentaires

Iterate & Erase - Benoît Dejean

Benoît Dejean — Sun, 22 Apr 2007 15:54:17 +0200

murrayc > "void erase(iterator pos) Associative Container Erases the element pointed to by pos." http://www.sgi.com/tech/stl/set.htm...

Oskar > yep, may be it's even nicer.

Iterate & Erase - Murray Cumming

Murray Cumming — Sun, 22 Apr 2007 11:47:59 +0200

erase() has a return value that should point to the next element.

Iterate & Erase - Oskar

Oskar — Sun, 22 Apr 2007 11:06:31 +0200

The following should also work.

<pre>

while (it != s.end()) {
   if (...)
       s.erase(it++);
   else
       ++it;
}

</pre>

Iterate & Erase - Benoît Dejean

Benoît Dejean — Sun, 22 Apr 2007 09:58:53 +0200

I am using next only at the end of the loop to move forward. Incrementing next doesn't increment it. I look at the current element using it, not next.

Iterate & Erase - anonymous coward

anonymous coward — Sun, 22 Apr 2007 02:59:26 +0200

s.begin() points to the first element of s.
when you do ++next _before_ the if, you never look at the first element.
++next should be after the if.