Jessitron

ElixirConf keynote: Elixir for the world

October 2, 2015 by jessitron

Whoa. If there is a more meaningful talk that the one @jessitron just gave at #ElixirConf, I haven’t seen it yet. — Raul Murciano (@happywebcoder) October 2, 2015 Video http://confreaks.tv/videos/elixirconf2015-keynote-elixir-should-take-over-the-world Slides with notes Big PDF with notes (15M) Slides only (on speakerdeck) References Camille Fournier on distributed systems: video Caitie McCaffrey on stateful services: video Denise Jacobs, creativity: video Marty … Read moreElixirConf keynote: Elixir for the world

This was not OK (regrets)

September 29, 2015 by jessitron

I have one major regret from StrangeLoop. I want to apologize and find a kinder way to be. At dinner the last night, I said something mean about Tony Morris. I’ve never met Tony Morris. I have a feeling of certainty that he was mean to people in the Scala community, and this contributed to … Read moreThis was not OK (regrets)

Functional principles come together in GraphQL at React Rally

May 26, 2019August 25, 2015 by jessitron

Sometimes multiple pieces of the industry converge on an idea fromdifferent directions. This is a sign the idea is important. Yesterday I spoke at React Rally (video coming later) about theconfluence of React and Flux in the front end with functionalprogramming in the back end. Both embody principles of composition, declarativestyle, isolation, and unidirectional flow … Read moreFunctional principles come together in GraphQL at React Rally

An Opening Example of Elm: building HTML by parsing parameters

May 26, 2019August 16, 2015 by jessitron

I never enjoyed front-end development, until I found Elm. JavaScript with its `undefined`, its untyped functions, its widely scoped mutable variables. It’s like Play-Doh, it’s so malleable. And when I try to make a sculpture, the arms fall off. It takes a lot of skill to make Play-Doh look good. Then Richard talked me into … Read moreAn Opening Example of Elm: building HTML by parsing parameters

Data-in, Data-out

May 26, 2019August 3, 2015 by jessitron

In functional programming, we try to keep our functions data-in, data-out: they take some data as parameters, return some data as output, and that’s it. Nothing else. No dialog boxes pop, no environment variables are read, no database rows are written, no files are accessed. No global state is read or written. The output of … Read moreData-in, Data-out

Event-driven philosophy

June 12, 2015 by jessitron

I hit an interesting word the other day: “rheomode.” In language, the rheomode (unlike other modes) puts the focus on verbs. It says, reality is a process, not so much a state. It is necessary to begin with the event as a basic concept, and later to arrive at the object as a continuing structure of … Read moreEvent-driven philosophy

Patterns and details

June 6, 2015 by jessitron

Christopher Alexander, the architect who wrote the ORIGINAL original patterns book, contributed a forward to Patterns in Software. He reports that in the years since Patterns in Architecture “We have begun to make buildings which really do have the quality I sought for all those year… This has come about in large part because, since … Read morePatterns and details

make it small in importance in relation to the life of the surrounding world

June 6, 2015 by jessitron

Ultratestable Coding Style

May 26, 2019June 6, 2015 by jessitron

Darn side-effecting programs. Programs that change things in the outside world are so darn useful, and such a pain to test.For every piece of code, there is another piece of code that answers the question, “How do I know that code works?” Sometimes that’s more work than the code itself — but there is hope. … Read moreUltratestable Coding Style

git: handy alias to find the repository root

September 30, 2019May 25, 2015 by jessitron

To quickly move to the root of the current git repository, I set up this alias: git config –global alias.home ‘rev-parse –show-toplevel’ Now, git home prints the full path to the root directory of the current project. To go there, type (Mac/Linux only) cd `git home` Notice the backticks. They’re not single quotes. This executes the command and then uses … Read moregit: handy alias to find the repository root