extract()

template<typename Out , typename... In>

node_t<Out> extract	(	record_t< DTypes< In... >> &	r_in,
		std::string	address
	)

Creates a bare node of type node_t<Out> from a record of nearly arbitrary type.

The node in the input record at the specified address must have a value type equal to the value type generated by Out.

Template Parameters

Out	the underlying distribution in the output node
In	the collection of distributions by which the input record is parameterized

Parameters

r_in	the input record
address	the address in the input record to access

Returns

node_t<Out> the created bare node