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Erlang OTP: Distributed & Fault-Tolerant Systems Programming · Lesson

Pattern Matching & Guards

Master Erlang's pattern matching and guard clauses, the foundation of expressive, branch-free Erlang code.

Matching, Not Assigning

In Erlang = is the match operator, not assignment: it binds left-side variables to right-side values, or fails if they cannot match.

X = 42.
% X is now bound to 42

Destructuring Tuples

Pattern matching can destructure compound terms like tuples in a single step, pulling values straight out.

{ok, Value} = {ok, 100}.
% Value is bound to 100

All lessons in this course

  1. Introduction to Erlang & VM
  2. Erlang Processes & Messaging
  3. Basic Concurrency Patterns
  4. Pattern Matching & Guards
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