Learning Dart

dart/scrabble-score/.exercism/config.json

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+{
+  "authors": [
+    "jvarness"
+  ],
+  "contributors": [
+    "Stargator",
+    "kytrinyx"
+  ],
+  "files": {
+    "solution": [
+      "lib/scrabble_score.dart"
+    ],
+    "test": [
+      "test/scrabble_score_test.dart"
+    ],
+    "example": [
+      ".meta/lib/example.dart"
+    ]
+  },
+  "blurb": "Given a word, compute the Scrabble score for that word.",
+  "source": "Inspired by the Extreme Startup game",
+  "source_url": "https://github.com/rchatley/extreme_startup"
+}

dart/scrabble-score/.exercism/metadata.json

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+{"track":"dart","exercise":"scrabble-score","id":"bb5e20e260e046ec8304134db5bfeed8","url":"https://exercism.org/tracks/dart/exercises/scrabble-score","handle":"br0xen","is_requester":true,"auto_approve":false}

dart/scrabble-score/HELP.md

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+# Help
+
+## Running the tests
+
+To run the tests:
+
+```sh
+$ dart test
+```
+
+## Submitting your solution
+
+You can submit your solution using the `exercism submit lib/scrabble_score.dart` command.
+This command will upload your solution to the Exercism website and print the solution page's URL.
+
+It's possible to submit an incomplete solution which allows you to:
+
+- See how others have completed the exercise
+- Request help from a mentor
+
+## Need to get help?
+
+If you'd like help solving the exercise, check the following pages:
+
+- The [Dart track's documentation](https://exercism.org/docs/tracks/dart)
+- [Exercism's programming category on the forum](https://forum.exercism.org/c/programming/5)
+- The [Frequently Asked Questions](https://exercism.org/docs/using/faqs)
+
+Should those resources not suffice, you could submit your (incomplete) solution to request mentoring.
+
+To get help if you're having trouble, you can use one of the following resources:
+
+- [Dart API Documentation](https://api.dart.dev/)
+- [Dart Gitter Chat](https://gitter.im/dart-lang/home)
+- [Community Information](https://www.dart.dev/community)
+- [/r/dartlang](https://www.reddit.com/r/dartlang) is the Dart subreddit.
+- [StackOverflow](https://stackoverflow.com/questions/tagged/dart) can be used to search for your problem and see if it has been answered already. You can also ask and answer questions.

dart/scrabble-score/README.md

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+# Scrabble Score
+
+Welcome to Scrabble Score on Exercism's Dart Track.
+If you need help running the tests or submitting your code, check out `HELP.md`.
+
+## Instructions
+
+Given a word, compute the Scrabble score for that word.
+
+## Letter Values
+
+You'll need these:
+
+```text
+Letter                           Value
+A, E, I, O, U, L, N, R, S, T       1
+D, G                               2
+B, C, M, P                         3
+F, H, V, W, Y                      4
+K                                  5
+J, X                               8
+Q, Z                               10
+```
+
+## Examples
+
+"cabbage" should be scored as worth 14 points:
+
+- 3 points for C
+- 1 point for A, twice
+- 3 points for B, twice
+- 2 points for G
+- 1 point for E
+
+And to total:
+
+- `3 + 2*1 + 2*3 + 2 + 1`
+- = `3 + 2 + 6 + 3`
+- = `5 + 9`
+- = 14
+
+## Extensions
+
+- You can play a double or a triple letter.
+- You can play a double or a triple word.
+
+## Source
+
+### Created by
+
+- @jvarness
+
+### Contributed to by
+
+- @Stargator
+- @kytrinyx
+
+### Based on
+
+Inspired by the Extreme Startup game - https://github.com/rchatley/extreme_startup

dart/scrabble-score/analysis_options.yaml

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+analyzer:
+  strong-mode:
+    implicit-casts: false
+    implicit-dynamic: false
+  errors:
+    unused_element:        error
+    unused_import:         error
+    unused_local_variable: error
+    dead_code:             error
+
+linter:
+  rules:
+    # Error Rules
+    - avoid_relative_lib_imports
+    - avoid_types_as_parameter_names
+    - literal_only_boolean_expressions
+    - no_adjacent_strings_in_list
+    - valid_regexps

dart/scrabble-score/lib/scrabble_score.dart

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+class ScrabbleScore {
+  Map letterScores = Map<rune, int>.of({
+    'a': 1, 'e': 1, 'i': 1, 'o': 1, 'u': 1, 'l': 1, 'n': 1, 'r': 1, 's': 1, 't': 1,
+    'd': 2, 'g': 2,
+    'b': 3, 'c': 3, 'm': 3, 'p': 3,
+    'f': 4, 'h': 4, 'v': 4, 'w': 4, 'y': 4,
+    'k': 5,
+    'j': 8, 'x': 8,
+    'q': 10, 'z': 10
+  });
+
+  int score(String word) {
+    word = word.toLowerCase();
+    int ret = 0;
+    word.runes.forEach(r => ret += letterScores[r]);
+    return ret;
+  }
+}

dart/scrabble-score/pubspec.yaml

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+name: 'scrabble_score'
+environment:
+  sdk: '>=2.18.0 <3.0.0'
+dev_dependencies:
+  test: '<2.0.0'

dart/scrabble-score/test/scrabble_score_test.dart

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+import 'package:scrabble_score/scrabble_score.dart';
+import 'package:test/test.dart';
+
+void main() {
+  group('ScrabbleScore', () {
+    test('lowercase letter', () {
+      final result = score('a');
+      expect(result, equals(1));
+    }, skip: false);
+
+    test('uppercase letter', () {
+      final result = score('A');
+      expect(result, equals(1));
+    }, skip: true);
+
+    test('valuable letter', () {
+      final result = score('f');
+      expect(result, equals(4));
+    }, skip: true);
+
+    test('short word', () {
+      final result = score('at');
+      expect(result, equals(2));
+    }, skip: true);
+
+    test('short, valuable word', () {
+      final result = score('zoo');
+      expect(result, equals(12));
+    }, skip: true);
+
+    test('medium word', () {
+      final result = score('street');
+      expect(result, equals(6));
+    }, skip: true);
+
+    test('medium, valuable word', () {
+      final result = score('quirky');
+      expect(result, equals(22));
+    }, skip: true);
+
+    test('long, mixed-case word', () {
+      final result = score('OxyphenButazone');
+      expect(result, equals(41));
+    }, skip: true);
+
+    test('english-like word', () {
+      final result = score('pinata');
+      expect(result, equals(8));
+    }, skip: true);
+
+    test('empty input', () {
+      final result = score('');
+      expect(result, equals(0));
+    }, skip: true);
+
+    test('entire alphabet available', () {
+      final result = score('abcdefghijklmnopqrstuvwxyz');
+      expect(result, equals(87));
+    }, skip: true);
+  });
+}