Return true if the specified lhs and rhs are both valueless by exception or if they have the same active alternative and their contained values compare equal; otherwise, return false. All alternatives shall support operator==.

Synopsis

Declared in <bslstl_variant.h>

template<
    class t_HEAD,
    class... t_TAIL>
bool
operator==(
    variant<t_HEAD, t_TAIL...> const& lhs,
    variant<t_HEAD, t_TAIL...> const& rhs);

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