LeCoupa

// PhantomJS Cheatsheet

$ brew update && brew install phantomjs  // install PhantomJS with brew

phantom.exit();

var page = require('webpage').create();

page.open('http://example.com', function() {});
page.evaluate(function() { return document.title; });

keis

import asyncio

@asyncio.coroutine
def waiting(r):
    print("hello from waiting -", r)
    yield from asyncio.sleep(2)
    print("bye from waiting -", r)
    return r

jprante

Elasticsearch configuration for high sustainable bulk feed

Test on single node, MacBook Pro, 16 GB RAM, 1TB SSD, OS X Maverick

ES 1.1.0 with Java 8, G1 GC, 12 GB heap

/Library/Java/JavaVirtualMachines/jdk1.8.0.jdk/Contents/Home/bin/java -Xms12g -Xmx12g -Djava.awt.headless=true -XX:+UseG1GC -Delasticsearch -Des.foreground=yes -Des.path.home=/Users/es/elasticsearch-1.1.0 -cp :/Users/es/elasticsearch-1.1.0/lib/elasticsearch-1.1.0.jar:/Users/es/elasticsearch-1.1.0/lib/:/Users/es/elasticsearch-1.1.0/lib/sigar/ org.elasticsearch.bootstrap.Elasticsearch

Node

kachayev

Channels Are Not Enough

... or Why Pipelining Is Not That Easy

Golang Concurrency Patterns for brave and smart.

By @kachayev

Intro

StephanHoyer

Icons have been part of applications since ages. Also most websites rely on icons. There were several ways to use them. First we used plain files then image sprites to reduce requests. Nowadays everyone uses icon fonts like font-awesome or glyphicons.

They are infinetly scaleable and styleable with css. The downside is they use pseudo elements for displaying. This is not only difficult to handle but also non-optimal for accessibilty.

A famous CSS-Tricks post brings SVG icons into play. The are also scalable and they behave like normal images. But we also want to have a sprite to not load any images seperatly and kill our servers and our sites performance. The proposed version is to create sprites with grunt or gulp using the symbol-trick. It's basically add every icon to a hidden sprite-image and give every icon an id-property.

<svg xmlns="http://www.w3.org/2000/svg" style="display: none;">
  
  <symbol id="beaker" viewBox="214.7 0 182.6 792">

demisx

// Gulp 4
var gulp = require('gulp');
var using = require('gulp-using');
var grep = require('gulp-grep');
var changed = require('gulp-changed');
var del = require('del');
var coffee = require('gulp-coffee');
var less = require('gulp-less');
var coffeelint = require('gulp-coffeelint');
var sourcemaps = require('gulp-sourcemaps');

StephanHoyer

Attention

This post described how to create an application with mithril 0.2.x. Now that ver 1.0 is out, some things are a little differnent.

The example is updated with the current version of mithril, though.

Isomorphic applications with mithril

AGoblinKing

var m = require("mithril");

module.exports = function Component(ctrl) {
    var foo = ctrl.Component.foo = m.prop(5);
    
    ctrl.Component.clicked = function() {
        ctrl.Component.foo(++foo);    
    };
    
    return function ComponentView() {

webcss

// utilizes the browser eventsystem
// usefull in cases where you need communication between independent components
// registered events are automatically removed onunload with preserving any other onunload handler
var eventsMixin = function(target) {
	
	var _subscriptions = [];

    target.broadcast = function(type, payload) {
        var ev = new CustomEvent(type, {
            detail: payload,

elad

Start a g2.2xlarge or better (GPU instance) with https://console.aws.amazon.com/ec2/v2/home?region=us-east-1#LaunchInstanceWizard:ami=ami-ffba7b94

Login, username is ubuntu

Update a bunch of stuff and make sure cudnn R2 is used:

luarocks install image
luarocks install loadcaffe
luarocks install torch
export LD_LIBRARY_PATH=/home/ubuntu/torch-distro/install/lib:/home/ubuntu/torch-distro/install/lib:/home/ubuntu/cudnn-6.5-linux-x64-v2-rc2