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 master branch, built from commit 5002c2d6a2.
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array::if_contains

Return a pointer to an element, or nullptr if the index is invalid.

value const*
if_contains(
    std::size_t pos) const;
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value*
if_contains(
    std::size_t pos);
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