itertools

Description:

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]
}
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Features and bugs #
Please file feature requests and bugs at the issue tracker.