1d339653d5
- Add VariableSpec class with magnitude field validation - Add Formula class supporting multiple input/output variables - Support d4rt_code as string or object with code field - Add comprehensive tests for parsing and serialization - Fix broken test import in pruebas_d4rt_test.dart Follows README.md format requirements exactly
41 lines
1.2 KiB
Dart
41 lines
1.2 KiB
Dart
// Copyright (c) 2024, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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import 'package:logging/logging.dart';
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final log = Logger('ExampleLogger');
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/// Example of configuring a logger to print to stdout.
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///
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/// This example will print:
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///
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/// INFO: 2021-09-13 15:35:10.703401: recursion: n = 4
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/// INFO: 2021-09-13 15:35:10.707974: recursion: n = 3
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/// Fibonacci(4) is: 3
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/// Fibonacci(5) is: 5
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/// SHOUT: 2021-09-13 15:35:10.708087: Unexpected negative n: -42
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/// Fibonacci(-42) is: 1
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void main() {
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Logger.root.level = Level.ALL; // defaults to Level.INFO
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Logger.root.onRecord.listen((record) {
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print('${record.level.name}: ${record.time}: ${record.message}');
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});
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print('Fibonacci(4) is: ${fibonacci(4)}');
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Logger.root.level = Level.SEVERE; // skip logs less then severe.
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print('Fibonacci(5) is: ${fibonacci(5)}');
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print('Fibonacci(-42) is: ${fibonacci(-42)}');
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}
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int fibonacci(int n) {
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if (n <= 2) {
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if (n < 0) log.shout('Unexpected negative n: $n');
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return 1;
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} else {
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log.info('recursion: n = $n');
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return fibonacci(n - 2) + fibonacci(n - 1);
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}
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}
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