public static member function
<string>
| character (1) | static void assign (char_type& r, const char_type& c); |
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| array (2) | static char_type* assign (char_type* p, size_t n, char_type c); |
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| character (1) | static void assign (char_type& r, const char_type& c) noexcept; |
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| array (2) | static char_type* assign (char_type* p, site_t n, char_type c); |
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Assign character
Assigns c to a character (r) or to an array of characters (s).
- (1) character
- Assigns c to r, as if using r=c.
- (2) array
- Assigns c to the first n characters in the array pointed by s, each as if using operator=.
In the standard specializations of
char_traits, this function behaves as the built-in
operator=, but custom
character traits classes may provide an alternative behavior whenever this is consistent with the assignment operation of its character type.
Parameters
- r
- An lvalue reference to character.
- c
- A character value.
- p
- A pointer to the array where the characters will be written.
- n
- Number of characters to fill with a value of c.
Member type char_type is the character type (i.e., the class template parameter in char_traits).
size_t is an unsigned integral type.
Return Value
none (for (1)).
p (for (2)).
Exception safety
Unless s does not point to an array long enough, this member function never throws exceptions (no-throw guarantee) in any of the standard specializations.
Otherwise, it causes undefined behavior.
See also
- char_traits::eq
- Compare characters for equality (public static member function)