30 Localization library [localization]

30.6 Text encodings identification [text.encoding]

30.6.2 Class text_encoding [text.encoding.class]

30.6.2.4 Comparison functions [text.encoding.cmp]

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friend constexpr bool operator==(const text_encoding& a, const text_encoding& b) noexcept;
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#
Returns: If a.mib_ == id​::​other && b.mib_ == id​::​other is true, then comp-name(a.name_,
b.name_).
Otherwise, a.mib_ == b.mib_.
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friend constexpr bool operator==(const text_encoding& encoding, id i) noexcept;
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Returns: encoding.mib_ == i.
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Remarks: This operator induces an equivalence relation on its arguments if and only if i != id​::​other is true.