Functions in Dart

Functions in Dart — a practical guide to Dart functions with clear examples you can reuse in real projects.

Flutter Tutorial Series (15/107). Prefer one article? Read the complete Flutter tutorial.

Short description

Functions are first-class in Dart — pass callbacks into widgets and async APIs.

Function styles

int add(int a, int b) => a + b;

void greet(String name, {String title = 'Hi'}) {
  print('$title $name');
}