Re: Data as Scripts and [package require]

From: Don Porter (dgp_at_email.nist.gov)
Date: 10/22/03 

Date: 22 Oct 2003 18:16:37 GMT

Bob Techentin wrote:
> But the package mechanism doesn't seem to be well suited to changing
> versions on different calls to [openFile]. Is there a "right way" to
> use packages and data files? Or am I barking up the wrong tree?

Probably the wrong tree. Packages are managed by [package] on a
per-interp basis, and it sounds like you are looking for something
that gets configured per-channel instead.

You could probably make things work with a one-slave-interp-per-channel
model, but that might be more work/overhead than makes sense.

Middle ground might be a one-slave-interp-per-data-version model, and
then route the evaluation of file contents to the right slave based
on what version the file format is. This might not be so bad because
you are probably using a (safe) slave interp to do the code evaluation
as data reading approach anyway. 

-- 
| Don Porter          Mathematical and Computational Sciences Division |
| donald.porter@nist.gov             Information Technology Laboratory |
| http://math.nist.gov/~DPorter/                                  NIST |
|______________________________________________________________________|

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