A toolkit for writing software in dart
Includes:
ZIOa building block for writing effectful programs. Explore the full API: https://pub.dev/documentation/elemental/latest/elemental/ZIO-class.htmlLayerfor composing dependenciesnucleus, a simple state and dependency management tool. See more here: https://pub.dev/packages/nucleus- Thanks to the
fpdartpackage https://pub.dev/packages/fpdart:OptionEither
- Immutable data structures, thanks to https://pub.dev/packages/fast_immutable_collections
The ZIO<R, E, A> type represents an synchronous or asynchronous operation.
- The
Rgeneric is for representing the requirements / environment - The
Egeneric is for representing errors - The
Ageneric is for the success type
There are a handful of helpful methods to ease composition!
import 'package:elemental/elemental.dart';
ZIO<NoEnv, Never, String> greeting(String name) => ZIO(() => "Hello $name!")
// Note `ZIO<NoEnv, Never, String>` can be shortened to `IO<String>`.
// Here we create a simple wrapper around `print`
IO<Unit> log(String message) => IO(() => print(message)).asUnit;
// And compose them together!
greeting.tap(log).run();It is worth noting that the above will run synchronously. Only when you start
using Future's in your program, will things run asynchronously.
A quick intro to services and layers can be found in example/.
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