kostasx

[
	{ "country": "Austria", "code": "AT" },
	{ "country": "Belgium", "code": "BE" },
	{ "country": "Bulgaria", "code": "BG" },
	{ "country": "Croatia", "code": "HR" },
	{ "country": "Cyprus", "code": "CY" },
	{ "country": "Czech Republic", "code": "CZ" },
	{ "country": "Denmark", "code": "DK" },
	{ "country": "Estonia", "code": "EE" },
	{ "country": "Finland", "code": "FI" },

kostasx

const store = createStore((state = { counter: 0 }, action) => {
  switch(action.type) {
    case "INCREMENT":
      return { counter: state.counter + 1 }
    case "DECREMENT":
      return { counter: state.counter - 1 }
    default:
      return state
  }
})

kostasx

function mapValues(obj, fn) {
  return Object.keys(obj).reduce((result, key) => {
    result[key] = fn(obj[key], key);
    return result;
  }, {});
}

function pick(obj, fn) {
  return Object.keys(obj).reduce((result, key) => {
    if (fn(obj[key])) {

kostasx

How to remove node_modules

Create a .gitignore file

1. Check for an existing .gitignore file in the project directory

ls -a

kostasx

Linux and Bash

Lets talk about Linux and Bash.

Notes

Notes were taken from edx.org of LFS101x Introduction to Linux.

Date: Sun Sep 28 00:30:48 EDT 2014

kostasx

Assorted collection of engineering articles / blogs

that I bookmarked but never had enough time to read

• The Agile Manifesto
• React Philosophies - 🧘 Things I think about when I write React code 🧘
• The Product-Minded Software Engineer
• Architecture, Performance, and Games - Game Programming Patterns / Introduction
• Responsible Tech Playbook
• Small, Sharp Tools
• Why the developers who use Rust love it so much
• Testing - 8th Light Blog

kostasx

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.

kostasx

/* *-*-*-*-*-*-*-*-*-*-* Challenge 1 ------------------
Create a variable with the type number and assign it an arbitrary value
*/
// ----------------------------------------------------
// *-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-
// ----------------------------------------------------

/* *-*-*-*-*-*-*-*-*-*-* Challenge 2 ------------------
Create a variable with the type string and use the addition operator to put two arbitrary words together
*/

kostasx

/*
 * Demonstrate JavaScript floating point math bugs by showing
 * which two-decimal-place numbers between 0.00 and 1.00 inclusive
 * have fractional parts after being multiplied by one hundred.
 */
var i = 0.00;

for (n = 0; n <= 100; ++n) {
  j = i * 100;
  if (Math.round(j) != j) {

kostasx

/**
 * Encrypts plaintext using AES-GCM with supplied password, for decryption with aesGcmDecrypt().
 *                                                                      (c) Chris Veness MIT Licence
 *
 * @param   {String} plaintext - Plaintext to be encrypted.
 * @param   {String} password - Password to use to encrypt plaintext.
 * @returns {String} Encrypted ciphertext.
 *
 * @example
 *   const ciphertext = await aesGcmEncrypt('my secret text', 'pw');