[Dune] [#683] Requesting value_type and unary operator-() in FieldVector.

[Dune]

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User who did this - Atgeirr Flø Rasmussen (atgeirr) 

Attached to Project - Dune
Summary - Requesting value_type and unary operator-() in FieldVector.
Task Type - Feature Request
Category - Common
Status - Unconfirmed
Assigned To - 
Operating System - Unspecified / All
Severity - Low
Priority - Normal
Reported Version - SVN
Due in Version - Undecided
Due Date - Undecided
Details - For easier interoperability with STL containers, it would be useful to have the field type as a value_type typedef. Example implementation:

        //! export the type representing the components, STL style
        typedef K value_type;

A separate issue is the availability of unary operator-(), which makes generic programming easier, for instance:
        T var;
        ...
        T signed_var = oriented ? var : -var;
In this context, T cannot be a FieldVector without operator-(). Example implementation:

	//! unary negation operator
	FieldVector operator- () const
	{
	    FieldVector z = *this;
	    for (size_type i=0; i<SIZE; i++)
		z.p[i] = -z.p[i];
	    return z;
	}


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http://www.dune-project.org/flyspray/index.php?do=details&task_id=683

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