katanacrimson’s gists

katanacrimson / ci_lower_bound.sql

Created July 6, 2017 15:55 — forked from favila/ci_lower_bound.sql

MySQL stored functions for calculating confidence intervals using Wilson scores: more precisely "Lower bound of Wilson score confidence interval for a Bernoulli parameter". Includes a P(qn) function (inverse normal distribution). See http://www.evanmiller.org/how-not-to-sort-by-average-rating.html This describes a way to rank items based on a ve…

	# Francis Avila 2009-07-04
	# See http://www.evanmiller.org/how-not-to-sort-by-average-rating.html
	# These functions calculate "Lower bound of Wilson score confidence interval for a Bernoulli parameter"
	# Two stored functions:
	# CI_LOWER_BOUND(pos, trials, confidence) calculate a wilson score given POS positive votes in TRIALS number of trials
	# PNORM(qn) calculate P(qn) (inverse normal distribution); needed by CI_LOWER_BOUND

	delimiter ;;
	CREATE DEFINER=`root`@`localhost` FUNCTION `ci_lower_bound`(pos INTEGER, trials INTEGER, confidence DOUBLE) RETURNS double
	NO SQL

katanacrimson / mpd.service

Last active August 29, 2015 14:00

Compare and contrast: sysvinit versus systemd

	[Unit]
	Description=Music Player Daemon
	After=sound.target

	[Service]
	ExecStart=@prefix@/bin/mpd --no-daemon

	[Install]
	WantedBy=multi-user.target

katanacrimson / ss.sh

Created October 26, 2013 23:39

	function ss {
	scrot ~/.ss/$1.png > /dev/null
	scp ~/.ss/$1.png solanine:~/http/ss/ > /dev/null
	echo http://odios.us/\~/ss/$1.png \| xclip -selection clipboard
	echo uploaded to http://odios.us/\~/ss/$1.png
	}

katanacrimson / gist:6159971

Last active December 20, 2015 16:18

	function uriCompressor()
	for(var i = 0, this.convArray = []; i <= 61; i++) {
	if(i < 10) {
	this.convArray.push(i)
	} else if(i < 36) {
	this.convArray.push(i.toString(36))
	} else {
	this.convArray.push((i - 26).toString(36).toUpperCase()
	}
	}

katanacrimson / plugin.js

Created March 13, 2013 19:48

Because data modification in plugins is nicer than just an emit listener. Note: your listeners have to be specifically adapted for plugin.hook() forwarding

	var EventEmitter = require('events').EventEmitter,
	util = require('util'),
	async = require('async')

	function plugin() {
	EventEmitter.call(this)
	}
	util.inherits(plugin, EventEmitter)

	// A horribly butchered form of EventEmitter.emit, hacked to support data modification & chaining

katanacrimson / httpserv.js

Last active December 12, 2015 08:49

	var url = require('url'), path = require('path'), fs = require('fs'), port = parseInt(process.argv[2] \|\| 8888, 10)
	require('http').createServer(function(req, res) {
	var rfile = path.join(__dirname, 'shareddir', url.parse(req.url).pathname)
	if(!fs.existsSync(rfile)) {
	res.writeHead(404, {'Content-Type': 'text/plain'})
	res.write("404 Not Found\n")
	res.end()
	} else {
	fs.readFile(rfile + (fs.statSync(rfile).isDirectory()) ? '/index.html' : '', 'binary', function(err, file) {
	if(err) {

katanacrimson / 4198.js

Last active December 11, 2015 16:49

	var zlib = require('zlib')
	zlib.gzip(Buffer('test'), function(err, res) {
	console.dir(res)
	var resString = res.toString()
	var resBuffer = Buffer(resString, 'binary')
	console.dir(resBuffer)
	zlib.gunzip(resBuffer, function(err, text) {
	if(err) throw err
	console.log(text.toString())
	})

katanacrimson / interject.js

Last active December 11, 2015 06:49

Attempt at nodejs stdout "buffer interjection". Might be useful, ugly attempt though. Relies on ANSI escape codes (primarily SCP, RCP, ED). Suggestions welcome, cleanup even more welcome. Please note that some things were done for specific reasons however - overloading `process.stdout` methods was not possible in my attempts and resulted in erro…

	var readline = require('readline'),
	EventEmitter = require('events').EventEmitter,
	buffer = require('buffer')

	var stdoutBuffer = new EventEmitter() // can't use util.inherits() with process.stdout. :\

	for(x in process.stdout) stdoutBuffer[x] = process.stdout[x]
	stdoutBuffer.last = ''

	stdoutBuffer.write = function(input, encoding) {

katanacrimson / compare.js

Created December 10, 2012 18:58

node.js script to compare Steam games owned between multiple users

	var request = require('request'),
	async = require('async'),
	libxmljs = require('libxmljs'),
	optimist = require('optimist')
	.string('_')
	.usage('Usage: $0 {username} [{username} [...]]'),
	argv = optimist.argv

	module.exports = {}
	module.exports.compareUserGames = compareUserGames = function(users, end) {

katanacrimson / app.js

Created December 2, 2012 18:23

nodejs app - expressjs 3.0 + socket.io v9 + passport + redis

	var express = require('express'),
	passport = require('passport'),
	LocalStrategy = require('passport-local').Strategy,
	connect = require('connect'),
	http = require('http'),
	path = require('path'),
	util = require('util'),
	fs = require('fs'),
	redis = require('redis'),
	cookie = require('cookie'),

Katana Crimson katanacrimson