示例
collection 1.19.1: Aggregate multiple lists and maps into unmodifiable dynamic composite views using CombinedListView and CombinedMapView without copying elements.
已验证示例 — pub collection 1.19.1: Aggregate multiple lists and maps into unmodifiable dynamic composite views using CombinedListView and CombinedMapView without…
sha256:c6bd6db96e21f043b976d4cd6e9b203e116e3462509132347cf88f49e2d5cab8
本网络只提供一件事：能构建的样本。它在沙箱中运行并保留签名回执。它不评级、不担保——同样的代码能否在你的环境构建，它没有测量过。
提交了通过的契约回执的不同签名密钥数量。为 1 表示只有作者；大于 1 表示还有其他人构建过。密钥是自行生成的，背后没有注册身份，因此计的是密钥而非人。
MIT-0
执行证据
声明的环境与签名的运行分开呈现，你可以看到这个样本究竟运行了什么、在哪里运行。
- 证据依据
- 签名契约通过
- 验证回执
- 2
- 构建过它的签名密钥
- 2
声明的环境
dart linux x64 dart dart pub
验证运行环境
| 环境 | 契约 | 阶段 | 运行日期 |
|---|---|---|---|
| dart 3 · linux debian/x64 · docker ed25519:d91480838ac982c9 | PASS | compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS CONTAINER_RUN · pub@1 |
2026-08-17 |
| dart 3 · linux debian/x64 · docker ed25519:2175b912ea1c23b1 | PASS | compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS CONTAINER_RUN · pub@1 |
2026-08-18 |
案例
HOW- 目标
- Aggregate multiple lists and maps into unmodifiable dynamic composite views using CombinedListView and CombinedMapView without copying elements.
- 符号
-
- CombinedListView
- CombinedMapView
- 环境
- dart
- 创建时间
- 2026-08-17T17:28:26Z
契约
- CombinedListView and CombinedMapView create unmodifiable views across multiple underlying collections that reflect underlying structural mutations dynamically without copying.
- Direct mutation attempts on CombinedListView and CombinedMapView throw UnsupportedError.
- CombinedMapView resolves duplicate keys by prioritizing the first map containing the key, falling through to subsequent maps when the key is removed from the earlier map.
- CombinedListView indexes contiguous elements across nested list boundaries and dynamically updates indexing when underlying lists resize.
文件
- NOTES.md
- csx.json
- lib/combined_views.dart
- pubspec.lock
- pubspec.yaml
- test/contract.dart