samwize

// # Mocha Guide to Testing
// Objective is to explain describe(), it(), and before()/etc hooks

// 1. `describe()` is merely for grouping, which you can nest as deep
// 2. `it()` is a test case
// 3. `before()`, `beforeEach()`, `after()`, `afterEach()` are hooks to run
// before/after first/each it() or describe().
//
// Which means, `before()` is run before first it()/describe()

gitaarik

Git Submodules basic explanation

Why submodules?

In Git you can add a submodule to a repository. This is basically a repository embedded in your main repository. This can be very useful. A couple of usecases of submodules:

• Separate big codebases into multiple repositories.

kevin-smets

Default

Powerlevel10k

jczaplew

Heroku + Github + Sensitive Data

Scenario: You deployed a Heroku project that contains sensitive data (password, API key, etc) but you want to share it on Github.

Problem: You need to commit all files necessary for the application to run on Heroku. However, pushing this to Github would reveal the sensitive info.

Solution: Have a production branch (for this example, master will be the production branch) and a Github branch. The latter contains a different .gitignore that ignores the sensitive files.

psi-4ward

var app = require('express')();
var GridStore = require('mongodb').GridStore;
var ObjectID = require('mongodb').ObjectID;
var MongoClient = require('mongodb').MongoClient;
var Server = require('mongodb').Server;

var dbConnection;
MongoClient.connect("mongodb://localhost:27017/ersatz?auto_reconnect", {journal: true}, function(err, db) {
  dbConnection = db;
  app.listen(3000);

zellyn

Using the “displacement by noise” method from the Mathematica StackExchange discussion, but with SVG filters.

The filter unfortunately operates pixel-by-pixel. I tried changing the filterRes parameter, but it slowed things down badly.

Tested in Chrome 23 on Ubuntu Precise, and Chrome 22 on Mac OS 10.8.

Check out Dan Foreman-Mackey's more sophisticated version of xkcd-style graphs with d3.

Discuss this on Hacker News, Reddit, or Google+.

aheckmann

/**
 * Module dependencies
 */

var express = require('express');
var fs = require('fs');
var mongoose = require('mongoose');
var Schema = mongoose.Schema;

// img path

jpoehls

var cluster = require('cluster');

if (cluster.isWorker) {

  console.log('Worker ' + process.pid + ' has started.');

  // Send message to master process.
  process.send({msgFromWorker: 'This is from worker ' + process.pid + '.'})

  // Receive messages from the master process.