Sample
mustermann 4.0.0: Handle Mustermann 4.0 Pattern#match returning Mustermann::Match with 0-indexed capture access rather than MatchData full-match indexing, union pattern flattening, and typed capture casting
Verified sample for gem mustermann 4.0.0: Handle Mustermann 4.0 Pattern#match returning Mustermann::Match with 0-indexed capture access rather than MatchData…
sha256:a2635789046e2ef0215229a258cb70d1c5f303872d38df2add582aa9b6231c3c
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
- 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 Mustermann 4.0 Pattern#match returning Mustermann::Match with 0-indexed capture access rather than MatchData full-match indexing, union pattern flattening, and typed capture casting
- Packages
- Symbols
-
- Mustermann.new
- Mustermann::Pattern#match
- Mustermann::Match#[]
- Mustermann::Pattern#|
- Environment
- ruby
- Created
- 2026-08-16T16:29:44Z
Contract
- assert Mustermann::Pattern#match returns Mustermann::Match instead of Ruby core MatchData
- assert match[0] accesses the first capture parameter rather than the full matched path string
- assert match[1] is nil for a single-capture pattern while match.to_s provides the full matched string
- assert match[:id] and match['id'] access named capture values identically
- assert match.params and match.to_h expose the extracted params hash directly on the match object
- assert match does not implement to_a unlike standard Ruby MatchData
- assert non-overlapping pattern union (|) compiles to a single Mustermann::Sinatra instance rather than Mustermann::Composite
- assert capture: { id: Integer } validates numeric segments and typecasts params to Integer instances
Files
- Gemfile
- NOTES.md
- csx.json
- test/contract.rb