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FS#46 - TMP in FieldVector considered harmful
User who did this: - Oliver Sander (sander)

Attached to Project - Dune
Summary - TMP in FieldVector considered harmful
Task Type - Feature Request
Category - Common
Status - New
Assigned To - Dune Developer Group
Operating System - All
Severity - Low
Priority - Normal
Reported Version - SVN
Due in Version - 
Due Date - Undecided
Percent Complete - 80%
Details - I propose to remove the template-metaprogramming stuff from
FieldVector and FieldMatrix.  My reasons are:

- The code gets harder to read and to maintain.  Even more
  so since it now also contains expression templates
- It increases compile time and space requirements
- It probably does not make the code more efficient.  
  Compilers with a parser good enough to parse TMP should
  have an optimizer able to unroll simple loops.
- FieldVectors with more than 500 entries (rare, but why
  not?) cause compiler errors.

Of course, the second and third point need to be verified
experimentally before deciding about this issue.


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