The Singleton Module and Its Pattern In Ruby

on YouTube ↗36m

" summary

Shows that Ruby’s stdlib Singleton module makes new and allocate private and supplies an instance method while forbidding clone/dup, demonstrates using Singletons for logging and config where data flows one way, builds examples: class-level Singleton methods for cats, per-object Singleton class to add PK’s snore, and a Schrödinger’s cat private-status fix by manipulating the Singleton class on an object. Argues the implementation ties to Ruby’s message dispatch and is pragmatically useful.

AI-written summary · about

" chapters (5)

1. 0:00Start
2. 3:37What is The Singleton Pattern?
3. 6:55Concerns
4. 9:10Common Appropriate Use Cases
5. 17:40Singleton class

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