Learning/Implementing Design Patterns (For Newbies) [closed]

Answer 1

Design Patterns

This tutorial site contains following sub-sections

• Intent of each design pattern
• Real World Structure for the design pattern
• A Problem statement
• Detailed discussion on the problem
• Checklist on how to arrive at a pattern
• Rules of thumb while arriving at pattern.
• Code snippets for the design pattern which includes C#, C++, Delphi, Java and PHP

This site also contains guide on Anti Patterns, UML and Refactoring.

Answer 2

For websites, a very good site is http://ajaxpatterns.org, from one of the developers of the ajaxian website

Answer 3

I'd add that Design Patterns book from the "Gang of four" is a bible for anyone who is seriously interested in design patterns.

Answer 4

Before spending money on books I would recommend Wikipedia's excellent design patterns page. Also for something different Google for "design pattern screencasts" or search for "design patterns" on YouTube. Getting the same information presented differently often helps the penny drop.

The Gang of Four book is the definitive text on the most well known patterns but is not that easy to read and with C++ examples not everyone's favourite.

The Head First Design Patterns text is far more accessible but only contains a subset of the Gang of Four patterns.

The most important thing is to understand where and why a particular pattern is useful. Afterwards search the web for implementation examples in the language of your choice and experiment until you "get it". Understand one pattern before moving on to the next. Everyone understands some patterns better than others (and there are hundreds of lesser known ones).

Just keep plugging away.

Answer 5

An annotation to the above comments.

A Quick Reference For GOF Patterns

Here is a good place you can start dofactory.com/patterns/patterns.aspx - You can find link to each pattern, along with corresponding implementations.

How ever, remember that these are GOF patterns. You might need to read and understand advanced patterns as well, once you gain enough expertise in OOAD. Head First Design Patterns is a good start, and after making some progress, go with Martin Fowler's Enterprise Application Architecture Patterns.

Applying Design Patterns - The Thought Process

Another main aspect - Applying Design patterns is as important as just knowing them. Reading these articles might help you as well.

Applying Design Patterns Part I

Applying Design Patterns Part II

Hope this helps

Answer 6

C# 3.0 Design Patterns for a C# perspective on design patterns.

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