avdosev/itertools_dart

Simple package for easy work with Dart iterators just like Python itertools.

itertools ·

Simple package for easy work with Dart iterators just like Python itertools.

Provide methods / functions:

• zip2/zip3/etc
• chain
• count
• enumerate / mapIndexed
• and other helpers

Links

Pub dev

Documentation

Issue tracker

Usage

import 'package:itertools/itertools.dart';

void main() {
  print(zip2(['H', ',', 'a', 'l'], ['i', ' ', 'l', '!'])
      .starmap((first, second) => first + second)
      // equal:
      // .map((e) => e.item1 + e.item2)
      .join());
  // output: Hi, all!

  print(range(first: 1, last: 10, step: 3).reversed.toList());
  // output: [7, 4, 1]

  // or more compact

  print(1.to(10, step: 3).reversed.toList());
  // output: [7, 4, 1]

  print(chain(1.to(4), [4, 5], 1.to(4)).toList());
  // output: [1, 2, 3,  4, 5,  1, 2, 3]
}

Features and bugs

Please file feature requests and bugs at the issue tracker.