Struct _stateboost::proto::_state — A PrimitiveTransform that returns the current state unmodified. Synopsisstruct _state : proto::transform< _state > { template<typename Expr, typename State, typename Data> struct impl : proto::transform_impl< Expr, State, Data > { // types typedef State result_type; // public member functions typename impl::state_param operator()(typename impl::expr_param, typename impl::state_param, typename impl::data_param) const; }; }; DescriptionExample: proto::terminal<int>::type i = {42}; char ch = proto::_state()(i, 'a'); assert( ch == 'a' );
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