How to use The pillars of functional programming with examples.

These three functions are part of the main operations on arrays in almost every programming language.

What you need to know before reading this article:

• What is a callback.
• Some familiarity with ES6 syntax.
• Know how to run javascript code using a REPL in Nodejs or the browser.

In this article you will learn:

A better understanding of these functions.

Check on complex cases to see their potential.

As a side note, this is not a reference manual to use all the arguments these functions have and it’s not an introduction on simple use cases. …

Learn how to write a RESTful API using Node.js and Express

In this article, you will learn to write a simple RESTful API using Node.js and Express.

This article will be useful if you are familiar with these concepts:

• ES6 syntax: arrow function, object notation, string templates.
• callbacks.
• JSON format.

What we’ll cover:

1. Setting up the project.

2. Adding express.

3. Running the server.

4. Introducing middlewares.

This article does not cover the design of RESTful APIs. We’ll cover that in another article. The aim of this article is to introduce you to the Express web framework and show you how great is for creating RESTful APIs. …

Learn how to write and format commits and use aliases to list them

To write good quality commit messages will save you from the wrath of the next maintainer of your project. Your future self will also be grateful when there is a bug and you’ll have to sail through all that history.

In this article you will learn:

• How Git messages are structured.
• How to write quality commit messages.
• How to use a template to help you with that.
• How to use Git Aliases.

Git message structure

Git messages are compound of two parts.

• Header or summary.
• Body.

When you are committing using git commit the default editor opens and waits for you to write a commit message, if you are using Git for the first time it’s probably vi, check at the end of the article for a quick intro. The first line is the Header and after an empty line comes the Body of a commit. This separation is intentional so that you can use options like git log --oneline to list only the Headers of the commit messages. …

git — the stupid content tracker

Git has a lot to offer, sometimes is overwhelming, for that reason it’s good to have a practical approach and explanations along the way to grasp the essentials of this magnificent tool.

This is the first part of a series of articles to introduce you to Git and then to level up your working development workflow using git.

Content.

• Git history (brief).
• Git workflow.
• Hands-on Git.

Git history (brief)

git — the stupid content tracker

man page

The problem

A software is a piece of code that grows, in every new feature added a tag is placed in it and you get new versions. Eventually, the owner needs to share that code and allow contributions from other people to make that software better (or worst…). How to achieve this? for the first part, the answer is: Version Control System (VCS) to track the changes. …

I just want to execute my own command in a terminal. — you.

Have you ever just wanted to have a handy command to execute your script in your terminal? In this article, I’ll teach you how you can do just that using an executable bash script.

Note: For Linux Users.

We’ll cover:

• How to create and run a basic bash Script.
• How to make it executable.
• Learn about the PATH environmental variable.
• Add it to the PATH to execute our script as a command on the terminal.
• Doing something more interesting in our script using curl and jq to create a currency converter CLI. …