Boost C++ Libraries of the most highly regarded and expertly designed C++ library projects in the world. Herb Sutter and Andrei Alexandrescu, C++ Coding Standards

This is the documentation for an old version of Boost. Click here to view this page for the latest version.

Boost Multi-index Containers Library

The Boost Multi-index Containers Library provides a class template named multi_index_container which enables the construction of containers maintaining one or more indices with different sorting and access semantics. Indices provide interfaces similar to those of STL containers, making using them familiar. The concept of multi-indexing over the same collection of elements is borrowed from relational database terminology and allows for the specification of complex data structures in the spirit of multiply indexed relational tables where simple sets and maps are not enough. A wide selection of indices is provided, modeled after analogous STL containers like std::set, std::list and hashed sets.

Boost.MultiIndex features additional functionalities, like subobject searching, range querying and in-place updating of elements, which make it a convenient replacement for std::set and set::multiset even when no multi-indexing capabilities are needed.

The versatile nature of Boost.MultiIndex allows for the specification of a wide spectrum of different data structures. The following are possible examples of use developed in the documentation:


Revised February 6th 2006

© Copyright 2003-2006 Joaquín M López Muñoz. Distributed under the Boost Software License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at