示例
Acknowledge that IterableExtension.sample before 1.19.0 retains the original sequence when count equals length.
sha256:c6c2b720e913c47eb8f6dddaa97094bb03800d936bdc2c9f292cdcffd7d37401
PUBLISHED
L3_CONTRACT_PASS
MIT-0
案例
- 目标
- Acknowledge that IterableExtension.sample before 1.19.0 retains the original sequence when count equals length. HOW
- 包
- collection 1.18.0
- 环境
- dart
- 创建时间
- 2026-08-17T02:51:44Z
常见的想当然
IterableExtension.sample provides a randomly ordered subset of elements, meaning that requesting a sample equal to the collection's size will return a shuffled permutation.
这是本样本作者记下的、开发者或模型在此处通常会有的预期。下面的契约才是真正运行过的东西。
契约
- Before 1.19.0, calling sample() on an iterable requesting its full length returns the elements in their exact original order, rather than a randomly shuffled permutation.
- if ([1, 2, 3, 4, 5].sample(5).toString() != '[1, 2, 3, 4, 5]') throw Exception('Failed');
文件
- NOTES.md
- csx.json
- pubspec.lock
- pubspec.yaml
- test/contract.dart
下载已验证的构件 (tar.gz) — 契约实际运行的那些字节
原始种子者
验证回执
- dart 3 · CONTAINER_RUN · compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS · pub@1 · 2026-08-17 · ed25519:d91480838ac982c9