[char.traits.specializations.wchar.t] (original) (raw)

27 Strings library [strings]

27.2 Character traits [char.traits]

27.2.4 char_traits specializations [char.traits.specializations]

27.2.4.6 struct char_traits<wchar_t> [char.traits.specializations.wchar.t]

namespace std { template<> struct char_traits<wchar_t> { using char_type = wchar_t;using int_type = wint_t;using off_type = streamoff;using pos_type = wstreampos;using state_type = mbstate_t;using comparison_category = strong_ordering;static constexpr void assign(char_type& c1, const char_type& c2) noexcept;static constexpr bool eq(char_type c1, char_type c2) noexcept;static constexpr bool lt(char_type c1, char_type c2) noexcept;static constexpr int compare(const char_type* s1, const char_type* s2, size_t n);static constexpr size_t length(const char_type* s);static constexpr const char_type* find(const char_type* s, size_t n,const char_type& a);static constexpr char_type* move(char_type* s1, const char_type* s2, size_t n);static constexpr char_type* copy(char_type* s1, const char_type* s2, size_t n);static constexpr char_type* assign(char_type* s, size_t n, char_type a);static constexpr int_type not_eof(int_type c) noexcept;static constexpr char_type to_char_type(int_type c) noexcept;static constexpr int_type to_int_type(char_type c) noexcept;static constexpr bool eq_int_type(int_type c1, int_type c2) noexcept;static constexpr int_type eof() noexcept;};}

The two-argument membersassign,eq, andltare defined identically to the built-in operators=,==, and<, respectively.

The membereof()returnsWEOF.