Plurrrr

I’ve been working through Leonard Susskind’s The Theoretical Minimum course, and one thing I’ve found interesting is the ubiquity of tensors - they seem to pop up everywhere in physics. I’ve been trying to build some intution behind what makes them so widely applicable, and I wanted to share my notes on this in the hopes that others might also find this useful. I’d also welcome any insights or corrections.

I've used Linux containers directly and indirectly for years, but I wanted to become more familiar with them. So I wrote some code. This used to be 500 lines of code, I swear, but I've revised it some since publishing; I've ended up with about 70 lines more.

A codemod is simply a script that refactors your source code automatically. The most basic codemod can be a “find & replace” script, but a more advanced codemod operates on the semantic structure of the code.

It takes some effort to write a codemod, but once you have it, you can find all instances of old patterns in the code and automatically update them to the new ones! This ensures we don’t have a mix of old and new patterns in the codebase, so old patterns won’t be propagated. On the off-chance an engineer commits code with an old pattern, you can simply run the codemod again to refactor those instances.