checklist.day

Singleton

JSON →
library 0.3.0 ·ruby
✓ verified Jun 18, 2026
utility

The Singleton module implements the Singleton pattern, ensuring a class has only one instance.

Resources

docswww.rubydoc.info/gems/singleton/ ↗
githubgithub.com/ruby/singleton ↗

API endpoints

full doc /v1/registry/singleton
install /v1/registry/singleton/install