June 2022
Intermediate to advanced
130 pages
2h 45m
English
Content preview from Programmer Passport: ElixirBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Introduce a DSL
Domain specific languages (DSLs) are tiny, specific languages written in a generic programming language. If you know where to look, Elixir embeds DSLs everywhere. ExUnit uses a DSL to build unit tests. Ecto Query uses a DSL to express queries and schemas. Phoenix uses a DSL to build a router table.
If you think about it, our code is building a tiny DSL that expresses Roman numerals. Some of the work is defining an API that our consumers can use. Other pieces of the problem involve packaging up our DSL in a convenient package our customers can consume.
Our Roman API already has some convenient functions that return a map of Roman numerals and an API to convert singles. It would be nice to introduce a feature that allows users to ...
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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.