This repository contains a collection of useful extension methods on the built-in objects in Dart, such as String, Iterable, and Object.

⚠️ Due to the ongoing null safety migration in the Dart SDK, the code currently available in the basics pub package does not reflect the state of the code in this repo. The code in this repo has been updated to be null-aware, which requires an SDK feature still gated by an experiment flag. Until the latest stable release of the Dart SDK includes null safety by default, the basics pub package will not be updated with any changes from this repo.

Import the basics library.

import 'package:basics/basics.dart';

Then use the methods directly on objects in your dart code.

List<int> numbers;

if (numbers.isNull) {
  print('Numbers is uninitialized');
}

for (var i in 1.to(10)) {
  if (i.isEven) numbers.add(i);
}

if (numbers.isNotNull && numbers.all(isEven)) {
  print('All numbers are even');
}

This is not an official Google project.