Boost C++ Libraries

...one 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 a snapshot of the develop branch, built from commit 5f0ff1c60c.

`static bool _has_error(Impl &&) noexcept`

Returns true if an error is present in the implementation passed in. Constexpr where possible.

Requires: Always available.

Complexity: Constant time.

Guarantees: Never throws an exception.

Last revised: January 22, 2019 at 01:11:40 UTC