Book Image

.NET 4.0 Generics Beginner's Guide

By : Sudipta Mukherjee
Book Image

.NET 4.0 Generics Beginner's Guide

By: Sudipta Mukherjee

Overview of this book

Generics were added as part of .NET Framework 2.0 in November 2005. Although similar to generics in Java, .NET generics do not apply type erasure but every object has unique representation at run-time. There is no performance hit from runtime casts and boxing conversions, which are normally expensive..NET offers type-safe versions of every classical data structure and some hybrid ones. This book will show you everything you need to start writing type-safe applications using generic data structures available in Generics API. You will also see how you can use several collections for each task you perform. This book is full of practical examples, interesting applications, and comparisons between Generics and more traditional approaches. Finally, each container is bench marked on the basis of performance for a given task, so you know which one to use and when. This book first covers the fundamental concepts such as type safety, Generic Methods, and Generic Containers. As the book progresses, you will learn how to join several generic containers to achieve your goals and query them efficiently using Linq. There are short exercises in every chapter to boost your knowledge. The book also teaches you some best practices, and several patterns that are commonly available in generic code. Some important generic algorithm definitions are present in Power Collection (an API created by Wintellect Inc.) that are missing from .NET framework. This book shows you how to use such algorithms seamlessly with other generic containers. The book also discusses C5 collections. Java Programmers will find themselves at home with this API. This is the closest to JCF. Some very interesting problems are solved using generic containers from .NET framework, C5, and PowerCollection Algorithms ñ a clone of Google Set and Gender Genie for example! The author has also created a website (http://www.consulttoday.com/genguide) for the book where you can find many useful tools, code snippets, and, applications, which are not the part of code-download section
Table of Contents (20 chapters)
.NET 4.0 Generics
Credits
Foreword
About the Author
Acknowledgement
About the Reviewers
www.PacktPub.com
Preface
2
Lists
4
LINQ to Objects
Migration Cheat Sheet

Designing a generic anagram finder


Generics are not limited to lists and you can even mix parameterized types with specialized types as well. For instance, what if you want to store the frequency of occurrence of a string, number, or a symbol. While the type of what you keep the frequency of is unknown or undecided, however you see that the frequency itself is always a number. Let's take a look at how we can implement that using anagrams as an example.

Anagrams are as fascinating as palindromes. Two sequences are said to be anagrams of each another, when they share the same number of elements in the same frequency.

For example, two strings "The eyes" and "They see" both have the same number of characters, and the frequency of each character in these two strings is the same. Both of them have a single "T", a couple of "e"s, and so on. Thus, they are anagrams of each other.

http://www.anagrammy.com/ organizes a competition for the best anagrams each month. Assume your friend wants to participate...