August 2015
Intermediate to advanced
168 pages
3h 32m
English
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Chapter 6. Iterative Control Structures – Loops
You learned about conditional controls in the previous chapter. Our journey into Ansible's world of control structures continues with iterative controls. Often, we need to create a list of directories, install a bunch of packages, or define and walk over nested hashes or dictionaries. Traditional programming languages use the for or while loops for iteration. Ansible replaces them with the with statements.
In this chapter, we are going to learn about:
- How to use iterative controls using the
withstatements - How to loop arrays to create multiple objects at once
- How to define nested hashes and walk over them to create data-driven roles
The omnipotent with statement
Iterating plain lists, parsing dictionaries, ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.