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

Return true if lhs equals rhs.

bool
operator==(
    string const& lhs,
    string const& rhs) noexcept;
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Return true if two storage pointers point to the same memory resource.

bool
operator==(
    storage_ptr const& lhs,
    storage_ptr const& rhs) noexcept;
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