ES6 for beginners - Part 2 (Arrow Functions)
(Fat) Arrow Functions We all wrote a lot of functions but let's start with a simple one that adds two arguments. var add = function(a,b) { return a + b; } Of course, everything is correct a...
ES6 for beginners - Part 1 (Let, Const)
Introduction In the beginning, I would like to congratulate everyone who has read some of my posts about JavaScript! Of course, there is nothing to prevent you from starting from here, but I th...
JavaScript - Part 20 (Bind, Call, Apply)
You can find previous part of this series here. We already know that a function is a special type of object and has several properties, we already discussed it. To better understand what we are go...
Managing Projects with GraphQL Editor
What is GraphQL Editor A GraphQL Editor is a tool that allows you to understand GraphQL schemas even if you are not a programmer. You can create your schema just by joining visual blocks and Graph...
How to use AJAX events for parallel requests
AJAX (Asynchronous JavaScript and XML), which gained serious traction in mid-2000s, is a set of techniques consisting of sending asynchronous (hence “A”) requests between the browser and the applic...
Basics of curses library in Ruby - Make awesome terminal apps!
Did you ever use Vim, top or its better alternative, htop? Immortal Midnight Commander? Or maybe the more user friendly version of du, ncdu? They are all terminal applications working in full scree...
GraphQL pagination in Rails
GraphQL cursor pagination in Rails. So you implemented some graphQL types but it just turns out that returning bazillions of records with each query introduces some performance issues. "It would b...
JavaScript - Part 19 (Closures)
After Immediately Invoked Function Expression, it's time for another very important topic. Closures At the moment, I hope that reading everything from the previous parts will pay off for a better...
JavaScript - Part 18 (IIFE)
The time has come to meet seen almost everywhere, the very popular IIFEs. Immediately Invoked Function Expressions What is IIFE really? Let's start with the fact that we already know what a Funct...
JavaScript - Part 17 (Arguments)
It's time to start the topic related to one more special key word that JavaScript engine gives us when we invoke the function. arguments It is next to a special variable: this, another element ge...