Questions and Answers
Who are the authors of the book 'Design Patterns: Elements of Reusable Object-Oriented Software'?
Erich Gamma, Richard Helm, Ralph Johnson, and John Vlissides
In which year was the book 'Design Patterns: Elements of Reusable Object-Oriented Software' published?
1994
How many classic software design patterns are described in the book?
23
What programming languages are used for the examples in the book?
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How many copies of the book have been sold in English and other languages?
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