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 2610335357.
Prev Up HomeNext

exception_type &&assume_exception() && noexcept

Narrow contract rvalue reference observer of the stored exception. NoValuePolicy::narrow_exception_check() is first invoked, then the reference to the exception is returned. As a valid default constructed exception is always present, no undefined behaviour occurs unless NoValuePolicy::narrow_exception_check() does that.

Note that if exception_type is void, only a const overload returning void is present.

Requires: Always available.

Complexity: Depends on NoValuePolicy::narrow_exception_check().

Guarantees: An exception is never thrown.

Last revised: February 12, 2019 at 16:36:24 UTC


Prev Up HomeNext