Re:What you need may be “pipeline +Unix commands” only
by kazinator on Tuesday March 05, 2019 @01:08AM
(#19308451)
Composing unix commands means endlessly adjusting the textual output of one tool to the input requirements of another. Most such coding only cares about the happy cases; it will march on with an incorrect datum because of some unexpected twist in a textual format. For instance, a field delimiting character suddenly occurs in a field. Or some code is scraping data by hard columns, but a field width overflows and the columns shift.
The problem with this type of thinking is that "composing tiny bits" is obviously good to anyone. BUT there are vast differences between composing unix commands and composing lisp functions (and composing tiny JS libraries in NPM etc.) and some of these are good, while some are not.
It's actually very difficult to properly create a system out of composable, re-usable components. I would actually say that Unix pipes are a particularly bad model of how to do that (as are NPM micro-libraries). No well-defined interfaces, arcane naming etc. - they are all reasons why most modern versions of these tools have grown and grown.