Alessandro Pezzato alepez

alepez / libao.conf

Created October 17, 2013 13:51

ogg123 and alsa dmix

	default_driver=alsa
	dev=default

alepez / rpi-gpio.js

Created October 29, 2013 11:33

	var gpio = require("pi-gpio");
	gpio.open(11, "input", function(err) { if (err) { console.log(err); }});
	setInterval( function() { gpio.read(11, function(err, value) { console.log("value:", value); }); }, 1000);

alepez / classical_vs_prototypal.js

Created November 4, 2013 14:19

node.js profiling memory classical vs prototypal

	var memwatch = require('memwatch');

	var classical = function() {

	var Apple = function(options) {
	var self = this;
	var color = options.color;
	var getColor = function() {
	return color;
	};

alepez / omx.js

Last active December 27, 2015 11:49

	var spawn = require('child_process').spawn;
	var util = require('util');

	var commands = {
	'pause' : 'p',
	'quit' : 'q',
	'play' : '.', // TODO: check
	'forward' : "$'\\x1b\\x5b\\x43'", // TODO: check
	'backward' : "$'\\x1b\\x5b\\x44'" // TODO: check
	};

alepez / launch_detached.js

Last active December 27, 2015 11:59

Launch a detached process of node running 'app.js' in the same directory of this script.

	#!/usr/bin/env node

	var spawn = require('child_process').spawn;
	var path = require('path');
	var nodeBin = process.execPath;
	var appjs = path.resolve(__dirname, 'app.js');
	var options = { detached: true, stdio: 'ignore', cwd: __dirname };
	var child = spawn(nodeBin, [appjs], options);
	child.unref();

alepez / EventEmitter_Object_create.js

Created November 6, 2013 13:38

inherit EventEmitter Crockford's way

	var EventEmitter = require('events').EventEmitter;
	var a = Object.create(EventEmitter.prototype);

	a.on('x', function() { console.log("x!"); });
	a.emit("x");

alepez / express-recursive-routing.js

Last active December 28, 2015 04:59

express recursive routing with namespace

	var fs = require('fs');
	var path = require('path');

	var walk = function(dir, done) {
	var results = {};
	fs.readdir(dir, function(err, list) {
	if (err) {
	return done(err);
	}
	var i = 0;

alepez / gist:7767581

Created December 3, 2013 11:17

	To make the black pixels transparent and keeps the white pixels as they are, run this command:

	convert source.png -alpha copy -fx '#fff' result.png

alepez / vertical_blur.glsl.rb

Created January 21, 2014 10:37

glsl shader generator for vertical blur with weights from Pascal Triangle

	#!/usr/bin/env ruby

	## first parameter is the row number from pascal triangle

	def triangle(n)
	ret = []
	(0..n).each{\|r\|
	lst=[1]
	term=1
	k=1

alepez / gist:8785308

Created February 3, 2014 14:58