When choosing vacation drinks, I focus on classics. And what could be more classic than Singleton, which was in the book of the gang of four "Design Patterns: Elements of Reusable ..."

When choosing vacation drinks, I focus on classics. And what could be more classic than Singleton, which was in the Gang of Four book?Design Patterns: Elements of Reusable Object-Oriented Software"which came out in 1994 year. There it was in the Creational Patterns section, and I have it on my shelf:)