Dune::ACFem::Expressions::impl::EvaluateSubExpression< Functor > Struct Template Reference

Operation functor for transform() which evaluates all contained sub-expressions. More...

#include <dune/acfem/expressions/subexpression.hh>

Detailed Description

template<class Functor>
struct Dune::ACFem::Expressions::impl::EvaluateSubExpression< Functor >

Operation functor for transform() which evaluates all contained sub-expressions.

Parameters

Clear

If true then instead of evaluation the sub-expressions all writable cache expressions are set to their canonical zero() object.

Note

This may not be what one wants to do if an expression contains common subexpressions. How, common subexpression optimization requires more knowledge and work, e.g. replacing all common subexpressions by a reference to a copy outside of the expression, or by replacing operand 0 (the storage cache for the value of the subexpression) by a reference to an external storage. So this function is rather a proof of concept.

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The documentation for this struct was generated from the following file:

• dune/acfem/expressions/subexpression.hh