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This is the documentation for a snapshot of the master branch, built from commit 25d613dfbc.

Struct null_context

boost::proto::context::null_context — An evaluation context for proto::eval() that simply evaluates each child expression, doesn't combine the results at all, and returns void.


// In header: <boost/proto/context/null.hpp>

struct null_context {
  // member classes/structs/unions
  template<typename Expr, typename ThisContext = null_context const> 
  struct eval :  proto::context::null_eval< Expr, ThisContext > {