1# Boost Multi-index Containers Library 2 3Branch | Travis | Drone | AppVeyor | Regression tests 4---------|--------|-------|----------|----------------- 5develop | [](https://travis-ci.com/boostorg/multi_index) | [](https://drone.cpp.al/boostorg/multi_index) | [](https://ci.appveyor.com/project/joaquintides/multi-index) | [](https://www.boost.org/development/tests/develop/developer/multi_index.html) 6master | [](https://travis-ci.com/boostorg/multi_index) | [](https://drone.cpp.al/boostorg/multi_index) | [](https://ci.appveyor.com/project/joaquintides/multi-index) | [](https://www.boost.org/development/tests/master/developer/multi_index.html) 7 8[Boost.MultiIndex](http://boost.org/libs/multi_index) provides a class template 9named `multi_index_container` which enables the construction of containers 10maintaining one or more indices with different sorting and access semantics. 11