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rx use case for ETL (was: Looking for generic text transformation utilit
From: |
Van L |
Subject: |
rx use case for ETL (was: Looking for generic text transformation utility library) |
Date: |
Fri, 20 Jul 2018 12:08:48 +1000 |
>> I can't seem to find a way to do simple
>> programmatic transformations without writing
>> a good portion of code
>
> "generic text transformation utility", you mean
> like the Unix tool sed(1), the "stream editor
> for filtering and transforming text", or tr(1),
> to "translate or delete characters"?
>
> Can you provide me/us with an example of
> a text, as well as the end result you want it
> to be translated into?
A killer-mode in Emacs for the
Extract Transform Load (or ETL) industry would be
for a way to use rx (not regexp) to step by step
transform a source buffer to desired target form.
Step 1. begin with two buffers, the source and target
which are identical
Step 2. an rx machine assisted composition buffer does
what sed(1), tr(1), regexp do by showing in two mini buffers
candidate patterns for source to target change which are
easy human readable and writable; imagine this kind of
workload isn’t done more than four times each year so
the readability has to be there after long stretches
and for first timers
Step 3. stop when there are no
undesired outliers in the target form