[multi_index] composite_key question
I've a multi_index container that has a composite_key index which is used to express a "checker board" like concept. I need to iterator over all rows, from 0 to n. I know how to employ equal_range(make_tuple(y)) to get the elements within a specific row, but how do I determine n? The only way I can think of doing this is doing a linear search using another index. Is there a better way?
Hi! May be you would like to add to your multi-index container a random access policy which will also remember the order of the elements being added. With Kind Regards, Ovanes Markarian On 9/20/07, Jeffrey Holle <jeffreyholle@bellsouth.net> wrote:
I've a multi_index container that has a composite_key index which is used to express a "checker board" like concept.
I need to iterator over all rows, from 0 to n. I know how to employ equal_range(make_tuple(y)) to get the elements within a specific row, but how do I determine n?
The only way I can think of doing this is doing a linear search using another index. Is there a better way?
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Hi Jeffrey ----- Mensaje original ----- De: Jeffrey Holle <jeffreyholle@bellsouth.net> Fecha: Jueves, Septiembre 20, 2007 8:26 pm Asunto: [Boost-users] [multi_index] composite_key question Para: boost-users@lists.boost.org
I've a multi_index container that has a composite_key index which is used to express a "checker board" like concept.
I need to iterator over all rows, from 0 to n. I know how to employ equal_range(make_tuple(y)) to get the elements within a specific row, but how do I determine n?
The only way I can think of doing this is doing a linear search using another index. Is there a better way?
I'm sorry but I'm afraid I'm not getting your question at all. What do you mean by "checker board concept"? Could you post the definition of your multi_index_container, or a simplified version of it? Thank you, Joaquín M López Muñoz Telefónica, Investigación y Desarrollo PS: What happened with http://lists.boost.org/boost-users/2007/09/30804.php ?
participants (3)
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"JOAQUIN LOPEZ MU?Z" -
Jeffrey Holle -
Ovanes Markarian