February 2018
Beginner
200 pages
4h 37m
English
Content preview from Learn Functional Programming with 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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Chapter 3Using Pattern Matching to Control the Program Flow
Controlling the program flow means controlling which functions and expressions will be executed. Imperative languages rely mainly on conditional constructors like if, but here in the functional world, pattern matching plays the central role. However, pattern matching is often misunderstood and hard for beginners to comprehend. That’s why half of this chapter is dedicated to understanding pattern matching. Then we’ll use pattern matching to decide which function to dispatch so we can have a control flow mechanism. By the end of this chapter, we’ll see some Elixir control-flow structures that use logical and pattern-matching expressions to simplify common expressions. Let’s take the ...
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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.