Dart Academy · Lesson

Higher-Order Functions and Currying

Pass, return, and partially apply functions.

Functions Are Values

In Dart, a function is just a value you can store in a variable. That single idea unlocks the whole world of functional patterns. 🎯

int square(int x) => x * x;
var op = square;
print(op(4)); // 16

A higher-order function is one that takes a function as an argument or returns a function. You have already used them with list methods.