In this week’s installment of Programming By Stealth, Bart Busschots teaches us how to use jq as a programming language. Before we get into the new stuff, Bart takes us through his solution to the challenge, and I have to say I was pretty chuffed when he said my solution to the extra credit portion was more elegant than his. To be fair, it took a buddy programming session with him for me to get the first part of the challenge figured out.
When we got into the programming language part of the lesson, there were so many times that I said, “I needed this last week!” I think finding out these options are available after understanding the problems they solve was fantastic.
We learned how to run jq filters from files, which means no more looking at our filters all on one line – we can put line feeds and indents into our filters to make them more readable. We can even add comments. Bart tells us about a couple of handy plugins for VS Code to give us syntax highlighting which will be swell.
My favorite thing I learned was how to add debugging to our filters. This one is a life changer. We explore a few functions for exploring data filters that will make life easier. We wrap up with an introduction to jq variables, which the developers of jq really don’t want you to use unless absolutely necessary.
You can find Bart’s fabulous tutorial shownotes at pbs.bartificer.net.
Read an unedited, auto-generated transcript with chapter marks: CCATP_2024_02_04