[#A8FB5BDC67F879418D8E86FE5424CD66EDEC52BE]
Returns true if this references an absolute path.
bool is_absolute() const noexcept;
Absolute paths always start with a forward slash ('/').
assert( url_view( "/path/to/file.txt" ).encoded_segments().is_absolute() == true );
Constant.
Throws nothing.