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Design patterns are typical solutions to commonly occurring problems in software design. You can’t just find a pattern and copy it into your program, the way you can with off-the-shelf functions or libraries. The pattern is not a specific piece of code, but a general concept for solving a particular problem. They are like pre-made blueprints that you can customize to solve a recurring design problem in your code.

The book Dive Into Design Patterns illustrates 22 classic design patterns and 8 design principles that these patterns are based on. ...Read More

• Every chapter starts from a discussion of a real life software design problem which is then progressively solved by applying one of the patterns.
• Then goes a detailed review of the pattern’s structure and its