Sample
args 2.7.0: Handle unprovided multi-options when explicitly setting defaultsTo to null
Verified sample for pub args 2.7.0: Handle unprovided multi-options when explicitly setting defaultsTo to null. The contract ran on dart 3 · linux debian/x64…
sha256:6336a9211912d77dc7e7126ddc7997c3e53e58dc13a1da250530ae1dea82f0ba
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
- Handle unprovided multi-options when explicitly setting defaultsTo to null
- Packages
- Symbols
-
- ArgParser.addMultiOption
- Environment
- dart
- Created
- 2026-08-17T02:04:08Z
Contract
- if (results['tags'] == null) throw StateError("ArgParser.addMultiOption silently coerces an explicitly provided defaultsTo: null into an empty list [], meaning the parsed value can never be null.");
- if (results['tags'] is! List || (results['tags'] as List).isNotEmpty) throw StateError("Expected an empty list.");
Files
- NOTES.md
- csx.json
- pubspec.lock
- pubspec.yaml
- test/contract.dart