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575a6852b9
* resorted to P0522R0-compliant BOOST_FLYWEIGHT_NOT_A_PLACEHOLDER_EXPRESSION for Clang>=19 * (debugging) output __clang_major__ when available * unconditionally use P0522R0-compliant BOOST_FLYWEIGHT_NOT_A_PLACEHOLDER_EXPRESSION * reverted * added clang++-19 job * (debugging) output BOOST_MPL_LIMIT_METAFUNCTION_ARITY * (debugging) #defined BOOST_MPL_CFG_NO_PREPROCESSED_HEADERS * expanded length of BOOST_FLYWEIGHT_NOT_A_PLACEHOLDER_EXPRESSION * tried alternative mechanism (draft) * refined alternative mechanism * documented not_placeholder_expr.hpp machinery * updated release notes
Boost.Flyweight
Flyweights are small-sized handle classes granting constant access to shared common data, thus allowing for the management
of large amounts of entities within reasonable memory limits. Boost.Flyweight makes it easy to use this common programming
idiom by providing the class template flyweight<T>, which acts as a drop-in replacement for const T.
Learn about Boost.Flyweight
Install Boost.Flyweight
- Download Boost and you're ready to go (this is a header-only library requiring no building).
- Using Conan 2: In case you don't have it yet, add an entry for Boost in your
conanfile.txt(the example requires at least Boost 1.86):
[requires]
boost/[>=1.86.0]
- If you're not using any compiled Boost library, the following will skip building altogether:
[options]
boost:header_only=True
- Using vcpkg: Execute the command
vcpkg install boost-flyweight
- Using CMake: Boost CMake support infrastructure allows you to use CMake directly to download, build and consume all of Boost or some specific libraries.
Support
- Join the #boost discussion group at cpplang.slack.com (ask for an invite if you’re not a member of this workspace yet)
- Ask in the Boost Users mailing list
(add the
[flyweight]tag at the beginning of the subject line) - File an issue
Contribute
- Pull requests against develop branch are most welcome. Note that by submitting patches you agree to license your modifications under the Boost Software License, Version 1.0.