Sample
mustermann 4.0.0: Control pattern memoization and match caching across Mustermann.new, match, and params calls
Verified sample for gem mustermann 4.0.0: Control pattern memoization and match caching across Mustermann.new, match, and params calls. The contract ran on…
sha256:b93244f63cc31a720f00109506358b78d33bfdbb43bf8e91519ac4a0d276f669
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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
ruby linux x64 ruby ruby bundler
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 | PASS | compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS CONTAINER_RUN · rubygems@1 |
2026-08-18 |
Case
HOW- Goal
- Control pattern memoization and match caching across Mustermann.new, match, and params calls
- Packages
- Symbols
-
- Mustermann.new
- Mustermann::Pattern.new
- Mustermann::RegexpBased#match
- Mustermann::RegexpBased#params
- Environment
- ruby
- Created
- 2026-08-16T15:57:09Z
Contract
- Mustermann.new returns the identical cached pattern instance for matching strings and options via WeakMap memoization rather than allocating a new pattern object each time.
- Mustermann.new with different options creates and caches a distinct pattern instance.
- pattern.match caches Mustermann::Match objects so consecutive calls with the same path return the identical memoized Match instance and cached params hash.
- pattern.params bypasses Match allocation and match caching, returning a newly allocated Hash directly from regexp named captures.
- Mustermann.new with cache: false disables Match caching, returning a new Mustermann::Match instance on each match call.
- Mustermann.new with a custom cache hash routes cached Match objects into the caller-provided hash table.
- Composite pattern operators retain memoization so unioning identical patterns returns the same composite instance.
Files
- Gemfile
- Gemfile.lock
- NOTES.md
- csx.json
- test/contract.rb