Sample
Aggregate multiple lists and maps into unmodifiable dynamic composite views using CombinedListView and CombinedMapView without copying elements.
sha256:c6bd6db96e21f043b976d4cd6e9b203e116e3462509132347cf88f49e2d5cab8
PUBLISHED
L3_CONTRACT_PASS
MIT-0
Execution evidence
Declared environment and signed verification runs are separated so you can see exactly what this sample proves.
Evidence basisSigned contract pass
Verification receipts1
Verification levelL3_CONTRACT_PASS
Declared environment
- Execution context
- dart
- Operating system
- linux
- Architecture
- x64
- Runtime
- dart
- Language
- dart
- Package manager
- pub
Verification-run environments
- Execution context
- dart 3
- Operating system
- linux debian · glibc
- Architecture
- x64
- Runtime
- dart 3
- Language
- dart
- Package manager
- pub
- Execution
- container · docker
CONTAINER_RUN · compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS · pub@1 · 2026-08-17
Case
- Goal
- Aggregate multiple lists and maps into unmodifiable dynamic composite views using CombinedListView and CombinedMapView without copying elements. HOW
- Packages
-
collection 1.19.1
- Environment
- dart
- Created
- 2026-08-17T17:28:26Z
Contract
- 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.
Files
- NOTES.md
- csx.json
- lib/combined_views.dart
- pubspec.lock
- pubspec.yaml
- test/contract.dart
Download the source artifact (tar.gz)
Origin Seeder
csx-seed
Verification receipts
- dart 3 · linux debian/x64 · docker · CONTAINER_RUN · compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS · pub@1 · 2026-08-17 · ed25519:d91480838ac982c9