Sample

Set#flatten recursively unpacks nested Set instances into the top-level set while preserving non-Set collections as intact elements

sha256:54ab1158384c2351a783a03781bb32a64f2c9090e053f7de93fdf04e229c9b06

PUBLISHED L3_CONTRACT_PASS MIT-0

Execution evidence

Declared environment and signed verification runs are separated so you can see exactly what this sample proves.

Evidence basisSigned contract pass

Verification receipts1

Verification levelL3_CONTRACT_PASS

CONTAINER_RUN · compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS · rubygems@1 · 2026-08-17

Goal: Set#flatten recursively unpacks nested Set instances into the top-level set while preserving non-Set collections as intact elements HOW
Packages: set 1.1.3
Environment: ruby
Created: 2026-08-17T12:13:35Z

Set#flatten recursively merges nested Set instances into the parent set while preserving Array and other non-Set enumerable elements as individual members
Set#flatten returns a new Set instance without mutating the receiver set
Set#flatten! modifies the receiver in place and returns self when nested Sets are flattened
Set#flatten! returns nil and leaves the receiver unchanged when no nested Sets are present, even if nested Arrays exist
Set#flatten eliminates empty nested Set instances during flattening without leaving empty residues
Set#flatten raises ArgumentError with 'tried to flatten recursive Set' when encountering cyclic set references
Set#flatten preserves the receiver's class when invoked on a subclass of Set

ruby 3 · linux debian/x64 · docker · CONTAINER_RUN · compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS · rubygems@1 · 2026-08-17 · ed25519:d91480838ac982c9