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 does not equal rhs.

bool
operator!=(
    string const& lhs,
    string const& rhs) noexcept;
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Return true if two storage pointers point to different memory resources.

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