[ET Trac] [Einstein Toolkit] #1554: Want to define constants in parameter files

[Einstein Toolkit]

#1554: Want to define constants in parameter files
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  Reporter:  eschnett     |       Owner:  sbrandt            
      Type:  enhancement  |      Status:  assigned           
  Priority:  major        |   Milestone:                     
 Component:  Cactus       |     Version:  development version
Resolution:               |    Keywords:                     
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Comment (by bmundim):

 I like the '$' prefix. Indeed it should be extended as Roland pointed out.
 For example it would be interesting to split output data directory
 according to data format or data size. I would set
 then out2D_dir = ${parfile}_2D or ${parfile}_asc. Or maybe we want to read
 an input file set as input_dir = $ENV{HOME}/path/to/input/file. It would
 be quite useful. Anyways, just adding a thought to this mix.

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Ticket URL: <https://trac.einsteintoolkit.org/ticket/1554#comment:18>
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