mdds 0.3.1

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I’m happy to announce the release of version 0.3.1 of the Multi-Dimensional Data Structure (mdds). This is a bug fix release, and contains no major changes from the previous version (0.3.0). The highlights of this release are:

  • use of autoconf tool, to allow you to run ./configure && sudo make install to install the library, and
  • drop the requirement for C++0x support, by using equivalent features from the boost library which mdds already depends on.

When using this library without the C++0x support, however, you need to define the MDDS_HASH_CONTAINER_BOOST compiler macro in order for the mdds library to use boost’s hash_containers, instead of the ones from C++0x. Similarly, you can define the MDDS_HASH_CONTAINER_STLPORT to force mdds to use stlport’s hash containers instead.

I will briefly explain the incompatible support of hash containers various libraries. Originally, the stlport library supported two hash containers, hash_map and hash_set, in the std namespace which can be used as hashed replacements of std::map and std::set, respectively. In C++0x, however, these two containers have been renamed to unordered_map and unordered_set which are still in the std namespace. Boost also provides unordered_map and unordered_set, but they are in the boost namespace. The change that this release contains should hopefully be useful when dealing with this incompatible hash container situation in various libraries.

This release contains patches from David Tardon and Phillip Thomas, who fixed various bits of the Makefile script. Phillip also helped me fix the rpm spec file. Thanks a lot!

About Kohei Yoshida

LibreOffice hacker, spreadsheet nerd, and machine learning beginner.
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