Have I mentioned lately how much I love jq? I love it so much. I've seen it billed as "sed for json", but as a PL nerd it really goes a couple steps beyond that.

One obvious thing is that it lets you program in the list monad with very simple syntax. I can do things like

$ echo "[[1,2,3],[4,5,6],[7,8,9]]" | jq ".[][]"
1
2
3
4
5
6
7
8
9

and

$ ( Read more... )

Here's a little javascript "game" I made (source at https://github.com/jcreedcmu/deconcentration) after reading about deconcentration of attention, a slightly kooky sounding but interesting notion that you can train yourself to "attend" to a large space of things instead of ( Read more... )

Somehow I'd thought that immutable data structure libraries for javascript like immutable.js and mori actually hashed data structure constants so that a sound and complete equality check (assuming no hash collisions) was O(1). And yet:

// immutable.js
function deep(n) {
var x = Immutable.List([n]);
for(var i = 0; i < 10000; i ( Read more... )

Here's a nice easy way to get natural-looking coastline shapes:

( Read more... )

Doofing around with soothing colors and silly shadow effects:
http://jcreed.org/js/random_word/

Playing around with phonegap/cordova some more for the heck of it. I had a few games/experiments lying around from a "see what I can code up in two hours or less" self-challenge from long ago, and I tried porting one of them to a touch interface:

( Read more... )

Since eub got me thinking about how to explain chords and chord progressions, I started playing with making a thing that displays the current state of my MIDI keyboard and can broadcast it via websocket/webrtc magic to another tab on another computer elsewhere, and also does some basic guessing of what the name of the chord you're playing is. It ( Read more... )

Feeling kind of shitty and feverish and mentally bluh like I am getting the flu or something tonight ( Read more... )

Was reading a little about task.js today. The tl;dr they give is that "generators + promises = tasks", i.e. the combination of the coroutine support that's in ES6 (generators) plus either library-based or baked-in promises should give you a nice concrete syntax for kinda-sorta pretending that asynchronous calls are synchronous function calls ( Read more... )

Here is a two-player board-game-like game thing that is the implementation of an idea I had in March of 1997 or so, with one twist that I thought of during playtesting that I think makes it a little richer strategically.


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