Once you have Ansible installed and your inventory configured, playbooks are the primary way to describe and enforce the desired state of your infrastructure. A playbook is a YAML file that groups one or more plays, each targeting a set of hosts and executing an ordered list of tasks. This tutorial covers playbook anatomy, the […]
One of the most popular methods of iterating through datasets in JavaScript is the `.map()` method. `.map()` creates an array from calling a specific function on each item in the parent array. `.map()` is a non-mutating method that creates a new array instead of changing the original. In this tutorial, we’ll look at four noteworthy uses of `.map()` in JavaScript: calling a function of array elements, converting strings to arrays, rendering lists in libraries, and reformatting array objects.
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