string::replace (1 of 5 overloads)

Replace a substring with a string.

string&
replace(
    std::size_t pos,
    std::size_t count,
    string_view sv);

Replaces rcount characters starting at index pos with those of sv, where rcount is std::min(count, size() - pos).

Strong guarantee.

All references, pointers, or iterators referring to contained elements are invalidated. Any past-the-end iterators are also invalidated.

*this

Name	Description
`pos`	The index to replace at.
`count`	The number of characters to replace.
`sv`	The `string_view` to replace with.

Type	Thrown On
boost::system::system_error	`size() + (sv.size() - rcount) > max_size()`.
boost::system::system_error	`pos > size()`.