Kotlin Academy · Lesson

What Is a Lambda? Syntax and Types

Understand lambda expressions: syntax, parameter types, and return values.

Lambdas in One Sentence

A lambda is an anonymous function — a function value you can store in a variable, pass to another function, or return.

A lambda is written between curly braces: parameters on the left of ->, body on the right.

fun main() {
    val greet = { name: String -> "Hello, $name!" }
    println(greet("World"))
}