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let bindings String interpolation Integers and floats Tuples Lists Booleans Case expressions Pipe operator

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Gleam / Types & Data

Option values

Learn Option values in Gleam with a focused explanation, a topic-specific example, and a mastery check.

12 min read • Beginner

gleam-012.gleam

gleam

pub type Option(a) { Some(a) None }
pub fn label(v) { case v { Some(x) -> x None -> "unknown" } }

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Lesson quizzes

Option values Mastery Check →

Pattern matching