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Post #25722 9
Boost.Graph 1.95 will be C++17

Dear Boost.Graph community,

In two release cycles (Boost release 1.95 in summer 2027) Boost.Graph will be bumped to C++17 😄

This decision follows two polls that did not surface any C++14 user base or demand while identifiying users stuck in C++17:

[Bumping BGL's minimum C++ standard: input wanted on target version #490](https://github.com/boostorg/graph/discussions/490)
Reddit poll

This standard version bump will bring benefits for maintenance, API and dependencies reduction:

`if constexpr`,
constexpr lambdas,
`[[nodiscard]]`, `[[maybe_unused]]` ...
std::any instead of boost::any
`std::invoke_result` instead of `boost::result_of`
...

We will not be able to guarantee backward compatibility with C++14. Please contact us if you are stuck in C++14.

The GIthub Discussion lives here: https://github.com/boostorg/graph/discussions/613

https://redd.it/1wt531i
@r_cpp
GitHub Bumping BGL's minimum C++ standard: input wanted on target version · boostorg graph · Discussion #490 Hi Graphlings! 🚀 During our modernization workshop in Paris (see #466), one of the most frequent discussion points was the C++ standard version BGL should require. Modernization is intuitively at o...
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