Sample
equatable 2.1.0: Prove that EquatableMixin enables deep value equality and collection hashing across custom class hierarchies, comparing nested collections value-wise with order-sensitive lists and order-insensitive sets.
Verified sample for pub equatable 2.1.0: Prove that EquatableMixin enables deep value equality and collection hashing across custom class hierarchies…
sha256:c163a38f5194f0eb07aa45ccd20fc7a734b270d21970668425694c9f4f7cdf14
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.
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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 |
2026-08-17 |
| dart 3 · linux debian/x64 · docker ed25519:2175b912ea1c23b1 | PASS | compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS CONTAINER_RUN · pub@1 |
2026-08-18 |
Case
HOW- Goal
- Prove that EquatableMixin enables deep value equality and collection hashing across custom class hierarchies, comparing nested collections value-wise with order-sensitive lists and order-insensitive sets.
- Packages
- Symbols
-
- EquatableMixin
- Equatable.props
- Equatable.hashCode
- Equatable.==
- Environment
- dart
- Created
- 2026-08-17T18:01:36Z
Contract
- A class applying EquatableMixin compares equal and produces identical hash codes to matching instances across deep nested collections, evaluating lists order-sensitively and sets order-insensitively.
- EquatableMixin allows classes in single-inheritance hierarchies to obtain value equality and hash code parity based on overridden props.
- Nested lists in props require matching element order, whereas nested sets compare equal regardless of element insertion order.
- Deeply nested collections including maps of lists evaluate equality recursively down to leaf elements.
- Equal EquatableMixin instances properly deduplicate in Set collections and look up correctly as Map keys.
- Props containing null values or empty props lists are safely compared without runtime exceptions.
Files
- NOTES.md
- csx.json
- lib/equatable_models.dart
- pubspec.lock
- pubspec.yaml
- test/contract.dart