The importance of a Backup

Before I started working professionally as a software engineer, I would see a lot of people talking about the importance of backups in the IT industry. A few weeks ago I worked on a project that didn’t have any backups and was in production! The first thing I did was a backup and used the […]

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Heroku rollback

A while ago had a problem in a production server in which I used Heroku’s rollback command, which goes back to the previous push/migration. When you run: heroku rollback It goes a step back in your commits/changes but upgrades the version. Current version = v33, after rollbackĀ current version = 34. If for any reason rollback […]

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Ruby cover? instead of include?

Last week I learned that we should use cover? instead of include?. When you ask a range if it includes something, ruby is going to instantiate every object within that range and then check if the object you pass into include? exists in there. If you ask cover? it’s just going to figure out and […]

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var and let the difference in JavaScript

Javascrit has something called Hoisting. This is when all variables and functions are loaded before the program runs. function loadProfiles(userNames){ // some code… var loadingMessage = “Hold a sec… Profiles loading!”; // some code… } var loadingMessage = “Loading your profile!”; What will happen here is that the first declaration of loadingMessage will be loaded […]

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Hexadecimal and Colors

This week will be more related to the Front End side of web development. So I thought about colors which are used everywhere. The web is one of the technologies that uses all the human senses, it evolved to become an everyday tool and entertainment. Today I will teach you how to calculate hexadecimal numbers […]

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