Iterate over all matching items with hashed_non_unique
I have a boost_multi_index with a hashed_non_unique key.
I understand that if I do a .find() for a particular key, I can get a single
entry with that key.
However, I want to iterate over *ALL* the entries with this particular key,
since there may be several.
How do I do this? I can't figure out which is the correct end iterator.
e.g. something along the following lines [haven't tried to compile]
typedef FirstName string;
typedef multi_index_container<
Employee,
indexed_by<
hashed_non_unique
----- Mensaje original -----
De: Joseph Turian
I have a boost_multi_index with a hashed_non_unique key.
I understand that if I do a .find() for a particular key, I can get a single entry with that key. However, I want to iterate over *ALL* the entries with this particular key, since there may be several. How do I do this?
I think .equal_range() is what you need. This member function returns a pair of iterators signalling the first and one past the last element with the given key. You can consult the reference http://boost.org/libs/multi_index/doc/reference/hash_indices.html for further details. HTH, Joaquín M López Muñoz Telefónica, Investigación y Desarrollo
Yes, that worked great, thanks!
On 11/23/06, "JOAQUIN LOPEZ MU?Z"
----- Mensaje original ----- De: Joseph Turian
Fecha: Jueves, Noviembre 23, 2006 7:34 pm Asunto: [Boost-users] Iterate over all matching items with hashed_non_unique Para: boost-users@lists.boost.org I have a boost_multi_index with a hashed_non_unique key.
I understand that if I do a .find() for a particular key, I can get a single entry with that key. However, I want to iterate over *ALL* the entries with this particular key, since there may be several. How do I do this?
I think .equal_range() is what you need. This member function returns a pair of iterators signalling the first and one past the last element with the given key. You can consult the reference
http://boost.org/libs/multi_index/doc/reference/hash_indices.html
for further details. HTH,
Joaquín M López Muñoz Telefónica, Investigación y Desarrollo _______________________________________________ Boost-users mailing list Boost-users@lists.boost.org http://lists.boost.org/mailman/listinfo.cgi/boost-users
participants (2)
-
"JOAQUIN LOPEZ MU?Z"
-
Joseph Turian