An application in production evolves by adding new features. You may also detect inconsistencies from previous developments that you want to improve, such as the naming in your database schema or adjustments in casing. You can rename columns in MySQL easily and this tutorial shows you how. {{outline}} MySQL 8. …

Working with dates may involve checking whether a given date is a weekday or a weekend. For example, you don’t want to send an email on weekends but on weekdays, and vice versa. This tutorial shows you how to determine whether a given JavaScript date is a weekend or …

The nano text editor is included in Debian-based operating systems. Because Ubuntu is based on Debian you’ll find nano pre-installed as well. The nano editor comes in handy when working in environments where you don’t have a user interface. For example, in server environments or using remote connections …

Typically we’re cloning a git repository into a dedicated directory. The cloned directory then has the name of the repository which, by default, is the repository’s slug. You may also define the directory name in which the git repository’s contents will be cloned. Recently we prepared the …

The ls command is essential when navigating a file system. ls displays files and directories in a given file system path. Yet, there’s a nuance when displaying files using the plain ls command: it’s not listing dotfiles. Dotfiles are the “hidden” files on your hard disk that start …

You may have seen JavaScript printing [object Object] when casting an object to a string. The [object Object] notation doesn’t give you information about the kind of object. You have to guess what object could cause this printing. This is where Symbol.toStringTag is helpful and this tutorial shows …

Converting plain JavaScript objects to strings results in '[object Object]'. This string representation isn’t helpful when debugging issues or looking for details. You can print details for an object when using a JSON string. But you don’t always want to print an object in a JSON …

In some situations, you need the number of days within a month. For example, when displaying statistics for each day of a month or when calculating a value with the unit “per day”. This tutorial shows you how to retrieve the number of days in a month using JavaScript. {{outline} …