https://github.com/fujidaiti/dart_just_match

A naive pattern matching for Dart
https://github.com/fujidaiti/dart_just_match

Last synced: 3 months ago
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A naive pattern matching for Dart

• Host: GitHub
• URL: https://github.com/fujidaiti/dart_just_match
• Owner: fujidaiti
• License: mit
• Created: 2020-12-26T10:07:01.000Z (almost 5 years ago)
• Default Branch: master
• Last Pushed: 2020-12-27T15:53:26.000Z (almost 5 years ago)
• Last Synced: 2025-02-21T19:26:04.847Z (8 months ago)
• Language: Dart
• Homepage: https://pub.dev/packages/just_match
• Size: 8.79 KB
• Stars: 0
• Watchers: 2
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • Changelog: CHANGELOG.md
  • License: LICENSE

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README

          
# just_match

`just_match` *just* provides a naive pattern *match*ing for Dart.

```dart

import 'package:just_match/just_match.dart';

import 'package:just_match/just_match_ext.dart';

void main() {

  print(interpret(100)); // 'The value is 100'

  print(interpret(Bar())); // 'The value is a Bar'

  print(interpret('Bob')); // "I'm sorry, I can't understand"

}

String interpret(Object value) {

  return value.match([

    '3.14'.then((it) => 'The value is pi'),

    100.then((it) => 'The value is 100'),

    Bar.then((it) => 'The value is a Bar'),

    isValidUserName.then((it) => 'The value is a valid user name'),

    otherwise(() => "I'm sorry, I can't understand"),

  ]);

}

class Bar {

  static Case then(Action action) => type(action);

}

bool isValidUserName(String value) =>

    4 < value.length && value.length < 10;

```