boost::urls::params_ref::append Append elements Synopsis Declared in header <boost/url/params_ref.hpp> iterator append(param_view const& p); Description This function appends a param to the view. The end() iterator is invalidated. url u; u.params().append( { "first", "John" } ); Linear in this->url().encoded_query().size(). Strong guarantee. Calls to allocate may throw. Return Value An iterator to the new element. Parameters Name Description p The param to append.