Pattern-Matching

Part Eight | Functional Programming Through Elixir: Guards and Pattern Matching in Function Heads

12 min read

Taking Pattern Matching Further

In Part Four, we introduced pattern matching and saw basic guards in function clauses. We wrote things like when age < 13 and moved on. This post picks up where that left off.

Guards and multi-clause functions are how you structure decision-making in Elixir. Where OOP reaches for if/else chains, switch statements, or the strategy pattern, Elixir uses function heads with guards. Once you’re comfortable with this approach, you’ll find that most conditional logic just becomes more functions.

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Part Four | Functional Programming Through Elixir: Pattern Matching

11 min read

A Different Way to Work with Data

In Part Three, we learned about pure functions and side effects. Now we’ll tackle one of the most distinctive features of functional programming: pattern matching.

Pattern matching is Elixir’s superpower for working with data. It’s not just a fancy way to assign variables - it’s a fundamentally different approach to extracting, validating, and routing data through your program. Once you understand pattern matching, you’ll find conditionals, type checking, and data extraction in OOP languages feel unnecessarily verbose.

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