id	summary	reporter	owner	description	type	status	milestone	component	version	severity	resolution	keywords	cc
8684	Provide a map-like container with key derivable from value	1zeeky@…	Ion Gaztañaga	"It would be nice to have a key-value associative container for which the user can provide a functor to derive a key from a value so that no additional memory to store the key is used.

This is different from a set in that the key- and value-types don't have to match."	Feature Requests	new	To Be Determined	container	Boost 1.53.0	Not Applicable