Master programming syntax, solve interactive challenges & run live code in Syntaxis Explore Arena →

menu_book Course Curriculum (Gleam) expand_more

Language Basics

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

Types & Data

Custom types Record constructors Pattern matching Option values Result values Type aliases Generic types Opaque types

Functions & Modules

Named functions Anonymous functions Higher-order functions Recursion Module imports Qualified calls Public functions Function capture

Practical Gleam

List.map List.filter List.fold String.split Result.try Error propagation Bit arrays JavaScript target externals

Gleam / Functions & Modules

Anonymous functions

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

12 min read • Intermediate

gleam-018.gleam

gleam

pub fn main() {
  let double = fn(x) { x * 2 }
  io.debug(double(9))
}

What to watch

Content source & attribution

Original Syntaxis Content · Original Syntaxis Content

Lesson quizzes

Anonymous functions Mastery Check →

Named functions

Higher-order functions