jimkang’s gists

jimkang / sort-mp4.sh

Created November 14, 2018 23:51

Moving every mp4 file in subdirectories into a directory named 'mp4'

	#!/bin/bash

	for file in ./recup_dir/.mp4

	do
	mv ${file} mp4
	done

jimkang / working-tar-exclude.sh

Created November 1, 2018 16:54

This is tar exclude command syntax that actually works on OS X. Run from the directory enclosing the project folder.

tar -zcvf project.tgz --exclude "./project/node_modules" ./project

jimkang / require-all-in-dir.js

Created September 18, 2018 00:48

Requiring all files in a directory

	/* global __dirname */
	var fs = require('fs');

	var files = fs.readdirSync(__dirname).filter(isAConfigFile);
	var configs = files.map(file => require(__dirname + '/' + file));

	function isAConfigFile(filename) {
	return filename.endsWith('-config.js');
	}

jimkang / da-mystery-of-unit-type.scala

Created July 6, 2018 13:59

Fairly similar lines of code seem to compile differently here.

	def render(s: String, mode: NameMode): String =
	if (s.matches("\\d+")) {
	return render(SafeLong(s.toInt), mode);
	// The line below seems to compile.
	} else if (s.charAt(0) == '-') {
	"negative " + render(s.substring(1).toInt, mode)
	} else if (s.length < 2) {
	val c = s.charAt(0)
	if (charIsAlpha(c)) {
	onesForChar(c)

jimkang / stddev.js

Created June 12, 2018 14:01

Simple stddev example

	var curry = require('lodash.curry');

	var counts = [9, 4, 4, 5, 49];
	var avgCount = mean(counts);
	var deviations = counts.map(curry(bMinusA)(avgCount));
	var squaredDevs = deviations.map(square);
	var variance = mean(squaredDevs);
	var populationStdDev = Math.sqrt(variance);
	console.log('avgCount', avgCount);
	console.log('populationStdDev', populationStdDev);

jimkang / tool.js

Created May 1, 2018 12:42

Typical top of a tool script

	/* global __dirname, process */

	var fs = require('fs');
	var ndjson = require('ndjson');
	var through2 = require('through2');
	var callNextTick = require('call-next-tick');

	if (process.argv.length < 3) {
	console.log(
	'Usage: node tools/toolname.js <export something.ndjson> > new_file.ndjson'

jimkang / tracking-colors.js

Created March 8, 2018 20:25

In case I ever need it: Color tracker for secret click-detection mirror canvases

	var hash = require('string-hash');

	function TrackingColors() {
	var idsForColors = {};
	return {
	getTrackingColorForId,
	getIdForTrackingColor
	};

	function getTrackingColorForId(id) {

jimkang / number-sayer.make

Created February 10, 2018 02:03

A thing that'll say large numbers like an octillion

	# Usage: ZEROES=9 make number-audio
	# e.g. A million has six zeroes (3 * (1 + 1)).
	# A billion has nine zeroes (3 * (2 + 1)).
	# A trillion has 12 zeroes (3 * (3 + 1)).
	number-audio:
	rm -f output.wav
	rm -f test-list.txt
	echo "file static/one.wav\n" > test-list.txt
	for i in {1..$(ZEROES)}; do printf "file 'static/zero.wav'\n" >> test-list.txt; done
	ffmpeg -f concat -safe 0 \

jimkang / size-svg-to-window.js

Created January 8, 2018 02:04

Set svg size to window size

	var width = +window.innerWidth;
	var height = +window.innerHeight;

	svg.attr('width', width);
	svg.attr('height', height);

jimkang / get-titles-from-page.js

Created December 22, 2017 00:56

Get titles from pages like this: http://www.pwnrank.com/top-500

var names = []; var items = document.querySelectorAll('.game .title'); for (var i = 0; i < items.length; ++i) { names.push(items[i].textContent); } console.log(JSON.stringify(names, null, 2));

Jim Kang jimkang