...one of the most highly
regarded and expertly designed C++ library projects in the
world.
— Herb Sutter and Andrei
Alexandrescu, C++
Coding Standards
boost::proto::_env_var::impl
// In header: <boost/proto/transform/env.hpp> struct impl : proto::transform_impl<Expr, State, Data> > { // types typedef typename proto::result_of::env_var<Data, Key>::type result_type; // public member functions result_type operator()(typename impl::expr_param, typename impl::state_param, typename impl::data_param) const; };
impl
public member functionsresult_type operator()(typename impl::expr_param, typename impl::state_param, typename impl::data_param data) const;
Fetches the value associated with Key
from the transform environment
passed in the data (third) parameter.
Parameters: |
|
||
Requires: |
|
||
Returns: |
|