string::assign (4 of 7 overloads)

Assign characters to a string.

string&
assign(
    char const* s,
    std::size_t count);

Replaces the contents with copies of the characters in the range {s, s+count). This range can contain null characters.

Linear in count.

Strong guarantee. Calls to memory_resource::allocate may throw.

*this

Name	Description
`count`	The number of characters to copy.
`s`	A pointer to a character string used to copy from.

Type	Thrown On
boost::system::system_error	`count > max_size()`.