Ugarz

Remove tracked files in git

Works with any files / folder, it's delete in remote the target.

git rm -r --cached node_modules
git commit -m 'Remove the now ignored directory node_modules'
git push origin master

Ugarz

How to use the Crypto module from Node js

Cipher

This is a simple example, please consider using createHash instead for passwords in production

const crypto = require('crypto');
const passwordToEncrypt = "AP34IOUR+&"
const salt = "My Awesome Salt"

function encryptData(salt, passwordToEncrypt){

Ugarz

Simple reminder class with Javascript

Have fun with Class

// Mother Class
class Provider {
    constructor(data) {
        this.provider = data.provider;
        this.maxTry = data.maxTry || 3;
    }

Ugarz

Recursion on array with Promises

Sometime you just want to do operations on a bunch of datas. Oh wait, there is Promises to resolve before.. Here is a simple proposal to solve it.

// Act like it is a database
const users = [
    { name: "ugo", age: 28 },
    { name: "camille", age: 25 }
]

Ugarz

Manage folder and file rights with Node.js

var fs = require('fs'),
    path = require('path'),
    assert = require('assert'),
    dir = 'tmp_'+Date.now(),
    file = dir+'/file.txt';

var existsSync = fs.existsSync || path.existsSync;

Ugarz

Reduce Practicing

const basket = [
  { "chanvre" : { "price": 23.39, "nb": 1 }},
  { "flapjack": { "price": 19.99, "nb": 2 }},
  { "farine"  : { "price": 19.99, "nb": 3 }}
];

const basket2 = [{

Ugarz

Workflow to process a bunch of users

How to process users recovered from a database going down the array of users until there is no more of them.

// Act like it is a database
const users = [
    { name: "ugo", age: 28 },
    { name: "camille", age: 25 }
]

Ugarz

How to pipe functions in Javacript

const add = (a, b) => a + b
const dbl = (num) => num * 2
const pipe = (f, g) => (...args) => g(f(...args))
const sumThenDbl = pipe(add, dbl)
const result = sumThenDbl(2, 1) // 6

Ugarz

Set data in key of value in object with javascript

Consider an simple object like so

// Build object
const obj = {}
// Add data to it
obj.data = { $: { 'myAwesomeKey': 'toto' }, _: 'myAwesomeValue' }

// Convert it to xml
const xml = xml2js(objet)

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Javascript Functions and privacy

Using Closures

Douglas Crockford’s code conventions for JavaScript recommend this pattern when privacy is important discouraging naming properties with the underscore prefix to indicate privacy.

var Person = (function() {
    function Person(name) {
        this.getName = function() {
            return name;