CSC/ECE 517 Fall 2011/ch4 4h kp

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Introduction

This wiki article discusses about some of the commonly used & easy to understand Desgin patterns[1] in the software industry. Specifically, we will be studying about the Singleton, Adapter, Command & Strategy patterns.

Design Pattern

Definition

Some of the common definitions available online are as follows.

  • "In software engineering, a design pattern is a general reusable solution to a commonly occurring problem within a given context in software design. A design pattern is not a finished design that can be transformed directly into code. It is a description or template for how to solve a problem that can be used in many different situations. Object-oriented design patterns typically show relationships and interactions between classes or objects, without specifying the final application classes or objects that are involved." - <ref>Wikipedia</ref>

Examples

Singleton

Adapter

Command

Strategy

Conclusion

References

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External Links