[#4BD7F242A7AB871BBBC81B7C1A1B0427D44A265F]
Set the query params
url_base& set_encoded_params(std::initializer_listps) noexcept;
This sets the query params to the elements in the list, which may contain percent-escapes and can be empty.
An empty list of params is distinct from having no query.
Escapes in the string are preserved, and reserved characters in the string are percent-escaped in the result.
assert( url( "http://example.com" ).set_encoded_params( {"id", "42"} ).encoded_query() == "id=42" );
this->has_query() == true
Linear.
Strong guarantee. Calls to allocate may throw. Exceptions thrown on invalid input.
query = *( pchar / "/" / "?" )
query-param = key [ "=" value ]
query-params = [ query-param ] *( "&" query-param )