std::char_traits::assign (3) Linux Manual Page

std::char_traits<CharT>::assign – std::char_traits<CharT>::assign

Synopsis

static void assign(char_type &r, const char_type &a);
(until C++ 11)

    static void assign(char_type &r, const char_type &a) noexcept;
(since C++ 11)(until C++ 17)

    static constexpr void assign(char_type &r, const char_type &a) noexcept;
(1)(since C++ 17)

    static char_type *assign(char_type *p, std::size_t count, char_type a);
(until C++ 20)

    static constexpr char_type *assign(char_type *p, (2)(since C++ 20)

                                                         std::size_t count,
                                       char_type a);

Assigns a character.
1) Assigns character a to character r.
2) Assigns character a to each character in count characters in the character sequence pointed to by p.

Parameters

a – character value to assign
r – character to assign to
p – pointer to a character sequence to assign to
count – the length of the character sequence

Return value

1) (none)
2) p

Complexity

1) Constant.
2) Linear in count