Search⌘ K
AI Features
Home
Courses
Learn Dart: First Step to Flutter

Defining a Function

Explore how to write user-defined functions in Dart, understand function return types and parameters, and apply shorthand syntax for concise function expressions. This lesson prepares you to create and call functions effectively in your Dart code.

We'll cover the following...

Writing your first function

In this chapter, we will cover user-defined functions and learn how to write our very own functions. Let’s get straight to it and look at an example of a very basic user-defined function.

Note: Ignore the Driver Code throughout this lesson.

Dart
void newPrint(){
  print("Function Called");
}
// Driver Code
main() {
  newPrint();
}

The above function is not really of any use to us as all it does is print the statement Function Called. However, regardless of what a function does, it follows a general syntax.

Code explanation

  • void is telling us that the function does not return anything. Remember when we were discussing the contains method used by collections? contains returned a boolean value. If your function returns
...