Constructor
This function constructs a URL from the string s, which must contain a valid URI or relative-ref or else an exception is thrown. The new url retains ownership by allocating a copy of the passed string.
url u( "https://www.example.com" );
return url( parse_uri_reference( s ).value() );
this->buffer().data() != s.data()
Linear in s.size().
Calls to allocate may throw. Exceptions thrown on invalid input.
URI           = scheme ":" hier-part [ "?" query ] [ "#" fragment ]
relative-ref  = relative-part [ "?" query ] [ "#" fragment ]
| Name | Thrown on | 
|---|---|
| system_error | The input does not contain a valid url. | 
| Name | Description | 
|---|---|
| s | The string to parse. |