std::char_traits<CharT>::assign

	(1)
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;		(since C++17)
	(2)
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, std::size_t count, char_type a );		(since C++20)

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.

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

1) (none)

2) p

1) Constant.

2) Linear in count

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