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boost::proto::_env_var::impl
// In header: <boost/proto/transform/env.hpp> struct impl : proto::transform_impl<Expr, State, Data> > { // types typedef proto::result_of::env_var< ; // public member functions (, , ) ; };
impl
public member functions(, , data) ;
Fetches the value associated with Key
from the transform environment
passed in the data (third) parameter.
Parameters: |
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Requires: |
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Returns: |
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