rust (formally known as rust_core) is a pure Dart implementation of patterns found in the Rust programming language, bringing powerful tools previously only available to Rust developers to Dart developers!

New types include Result, Option, Cell, Slice, Array, Iterator, Channels, Mutex, Path and more.

See the Documentation Book 📖 for a deeper dive!

Example: Rust Language vs rust Package

---

Goal: Get the index of every "!" in a string not followed by a "?"

Rust:

use std::iter::Peekable;

fn main() {
  let string = "kl!sd!?!";
  let mut answer: Vec<usize> = Vec::new();
  let mut iter: Peekable<_> = string
      .chars()
      .map_windows(|w: &[char; 2]| *w)
      .enumerate()
      .peekable();

  while let Some((index, window)) = iter.next() {
      match window {
          ['!', '?'] => continue,
          ['!', _] => answer.push(index),
          [_, '!'] if iter.peek().is_none() => answer.push(index + 1),
          _ => continue,
      }
  }
  println!("{:?}", answer); // [2, 7]
}

Dart:

import 'package:rust/rust.dart';

void main() {
  final string = "kl!sd!?!";
  Vec<int> answer = [];
  Peekable<(int, Arr<String>)> iter = string
      .chars()
      .mapWindows(2, identity)
      .enumerate()
      .peekable();

  while (iter.moveNext()) {
    final (index, window) = iter.current;
    switch (window) {
      case ["!", "?"]:
        break;
      case ["!", _]:
        answer.push(index);
      case [_, "!"] when iter.peek() == null: // or `iter.peekOpt().isNone()`
        answer.push(index + 1);
    }
  }
  print(answer); // [2, 7]
}

Project Goals

rust's primary goal is to give Dart developers access to powerful tools previously only available to Rust developers.

To accomplish this, Rust's functionalities are carefully adapted to Dart's paradigms, focusing on a smooth idiomatic language-compatible integration. The result is developers now have a whole new toolset to tackle problems in Dart.

True to the Rust philosophy, rust strives to bring reliability and performance in every feature. Every feature is robustly tested. Over 500 meaningful test suites and counting.