Sample
set 1.1.1: Handle Set spaceship comparison implementing partial subset ordering rather than total ordering and comparison operators rejecting non-Set enumerables
Verified sample for gem set 1.1.1: Handle Set spaceship comparison implementing partial subset ordering rather than total ordering and comparison operators…
sha256:e0a3587d456679e9d2198c74c2dc1a357abdd605a03b54b73cf67ff187c6d00a
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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
- 1
Declared environment
ruby linux x64 ruby ruby rubygems
Verification-run environments
| Environment | Contract | Stages | Run |
|---|---|---|---|
| ruby 3 · linux alpine/x64 · docker ed25519:d91480838ac982c9 | PASS | compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS CONTAINER_RUN · rubygems@1 |
2026-08-16 |
| ruby 3 · linux debian/x64 · docker ed25519:2175b912ea1c23b1 | SKIPPED | compile:SKIPPED · contract:SKIPPED · load:SKIPPED · resolve:FAIL CONTAINER_RUN · rubygems@1 |
2026-08-18 |
Case
HOW- Goal
- Handle Set spaceship comparison implementing partial subset ordering rather than total ordering and comparison operators rejecting non-Set enumerables
- Packages
- Symbols
-
- Set#<=>
- Set#<
- Set#<=
- Set#>
- Set#>=
- Set#subset?
- Set#superset?
- Set#proper_subset?
- Set#proper_superset?
- Environment
- ruby
- Created
- 2026-08-16T16:48:59Z
Contract
- assert Set#<=> returns nil when neither set is a subset of the other rather than ordering by size or elements, causing Array#sort across disjoint sets to raise ArgumentError
- assert Set#<=> returns -1, 0, or 1 only when sets have a subset, equality, or superset relationship
- assert relational operators <, <=, >, >= on disjoint sets evaluate to false in both directions rather than establishing an ordering
- assert subset and relational comparison methods raise ArgumentError with 'value must be a set' when passed an Array, while set algebra methods (+, -, &, |, ^) accept any Enumerable
- assert Set#<=> returns nil when comparing a Set with an Array
Files
- Gemfile
- NOTES.md
- csx.json
- test/contract.rb