Google Groups no longer supports new Usenet posts or subscriptions. Historical content remains viewable.
Dismiss
The perfect STL container
16 views
Skip to first unread message
ArbolOne
Sep 28, 2012, 8:51:34 AM9/28/12
to
Does STL have a container that would allow me to story only one copy of whatever data I am storing? For instance, in a data pool where there are several people named Mike, the container will only allow me to story the first person named Mike.
TIA
TIA
Torsten Mueller
Sep 28, 2012, 10:05:51 AM9/28/12
to
ArbolOne <Arbo...@gmail.com> schrieb:
Ordinary sets and a maps behave like this. Which element remains in the
container depends on the input method: a set stores always the last
added element, previously stored elements with the same key are removed
if you add a new one. A map shows the same behavior using the []
operator, but the insert method of a map refuses the insertion if an
element with that key already exists, so the first added element remains
in the container. Note: inserting values in large sets or maps can get
very slow because it's the most expensive operation on those containers.
T.M.
container depends on the input method: a set stores always the last
added element, previously stored elements with the same key are removed
if you add a new one. A map shows the same behavior using the []
operator, but the insert method of a map refuses the insertion if an
element with that key already exists, so the first added element remains
in the container. Note: inserting values in large sets or maps can get
very slow because it's the most expensive operation on those containers.
T.M.
0 new messages