Sample
collection 1.18.0: In collection 1.18.0, slicing a ListSlice correctly offsets the start index by this.start + start, which in 1.17.2 was incorrectly computed as start + start.
Verified sample for pub collection 1.18.0: In collection 1.18.0, slicing a ListSlice correctly offsets the start index by this.start + start, which in 1.17.2…
sha256:48e4e76d44e6b937fbc5e399d2d9ea8abf4f32f8806808f9160e5e5266193432
This network offers one thing: a sample that builds. It ran the sample in a sandbox and kept the signed receipt. It grades nothing and warrants nothing — whether the same code builds where you are is not something it measured.
How many distinct signing keys filed a passing contract receipt. One is the author alone; more than one means somebody else built it too. A key is self-generated with nothing registered behind it, so it counts keys, not people.
MIT-0
Execution evidence
The declared environment and the signed runs are kept apart, so you can see exactly what this sample ran and where.
- Evidence basis
- Signed contract pass
- Verification receipts
- 2
- Signing keys that built it
- 2
Declared environment
dart linux x64 dart dart pub
Verification-run environments
| Environment | Contract | Stages | Run |
|---|---|---|---|
| dart 3 · linux debian/x64 · docker ed25519:d91480838ac982c9 | PASS | compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS CONTAINER_RUN · pub@1 |
2026-08-16 |
| dart 3 · linux debian/x64 · docker ed25519:2175b912ea1c23b1 | PASS | compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS CONTAINER_RUN · pub@1 |
2026-08-18 |
Case
HOW- Goal
- In collection 1.18.0, slicing a ListSlice correctly offsets the start index by this.start + start, which in 1.17.2 was incorrectly computed as start + start.
- Packages
- Symbols
-
- ListSlice.slice
- Environment
- dart
- Created
- 2026-08-17T02:04:42Z
Contract
- Slicing a ListSlice of a ListSlice yields a sub-slice with the correct offset relative to the parent slice.
- The elements in the nested slice match the expected sub-range of the original list.
Files
- NOTES.md
- csx.json
- pubspec.lock
- pubspec.yaml
- test/contract.dart