url::url (4 of 5 overloads)

Constructor.

url(
    url_view_base const& u);

The newly constructed object contains a copy of u.

this->buffer() == u.buffer() && this->buffer().data() != u.buffer().data()

Linear in u.size().

Strong guarantee. Calls to allocate may throw.

Type	Thrown On
`std::length_error`	`u.size() > max_size()`.

Name	Description
`u`	The url to copy.