Check which ports are open to the outside world. Helps make sure that your firewall rules are working as intended.
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I would like to check that the input iterators first and last refer to the same container. I know that the STL containers carry out such a check, since if one tries to use insert when this condition fails, one gets an error, e.g., "string iterators incompatible". How is this check implemented for STL containers?
void insert (iterator position, InputIterator first, InputIterator last);
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