Yo folks, today is the day! . 1. Compiling to Assembly from Scratch is available in print for $49. 2. It is free to read online from the book's website. And I'm not telling you the website, because this platform simply cannot tolerate links.

Anyway, this was inspired by me reading the HN piece on jj version control system. I will have to try it. I think it makes a lot of sense. I have always visualized staging area as an "undercooked" commit, with working directory as an even more "undercooked" commit on top of it.

RT @yawaramin: @keleshev -p is to prune ie delete local tracking branches whose upstream branches have been deleted from the origin. It's a….

In the code snippets I, of course, forgot to write `git push origin …` instead of `git push …`. I do this mistake all the time.

So, I basically use git in a very centralized fashion, only working with origin branches, not creating a single local branch, creating headless commits and pushing them immediately.

git commit -a # and now we're in a headless state. git push HEAD:refs/heads/my-new-branch # this creates a branch. …code more…. git commit -a. git push HEAD:my-new-branch # push to existing branch. …work more, occasionally merge/rebase push/force-push….

I'm not sure why I do it, but for years I've had this (probably weird) git workflow:. git fetch -p # don't remember what -p is for, but remember there was some gotcha I want to always avoid. git checkout origin/main # yes, the origin one. …code, then….

RT @ErikRose: I am on the job market! I've written chunks of Firefox, 5 of the top-1% Python libraries, and the update machinery for Let’s….

Another "first": someone bought two copies!.

Big shout out to @PbKatiuska who illustrated the cover! For the print edition she drew 15 chapter illustrations. If you liked the cover, wait until you see the chapter illustrations!.

First sale! It's from Germany!.

Someone already posted it on Hacker News! Give it a thumbs up there.

You don't make this easy for me, do you?.

Oh, the mathematical elegance of APL! Even the logarithm operator is stylized to look like a natural log…

Why should I type "echo $?" every time—let the computer do the work!.

But I'm simplifying. Actually, I have one whistle and bell, and my prompt is this (zsh):. nl=$'\n'; PROMPT="%(?. ${nl}; echo $""?${nl}%?${nl})${nl}; ". Which is same as before, but with a conditional. If some command exited with an error code—say 42—print:. ; echo $?.42.

Like, it's *my* laptop. I *know* the username and host, alright…. And the current directory path is in the tab name anyway.

Never been fond of complicated colorful shell prompts with bells and whistles, but recently reached complete zen with the following one:. PROMPT="; ". Inspired by @thingskatedid to use the semicolon to be able to easily copy shell commands from terminal to files.

[Blog] Pretty Printing in OCaml: A Format Primer.

Dear colleague, your code review grew so stale, I had to dismiss it.