Book Image

Everyday data structures

By : William Smith
Book Image

Everyday data structures

By: William Smith

Overview of this book

Explore a new world of data structures and their applications easily with this data structures book. Written by software expert William Smith, you?ll learn how to master basic and advanced data structure concepts. ? Fully understand data structures using Java, C and other common languages ? Work through practical examples and learn real-world applications ? Get to grips with data structure problem solving using case studies
Table of Contents (20 chapters)
Everyday Data Structures
Credits
About the Author
About the Reviewer
www.PacktPub.com
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Preface
Free Chapter
1
Data Types: Foundational Structures

A few pointers


Many languages view memory as a series of successive cells, each a certain number of bytes in size and each with a unique address. Pointers are memory management tools, which are really objects that reference, or point to, a memory cell's address. By utilizing pointers, a program can store objects in memory that are themselves larger than a single memory block. Some languages use the * operator to denote the assignment of a pointer. If you use Objective-C, or if you have worked with C/C++, you will already be very familiar with this operator. C#, Java, and Swift developers won't have had too much experience with this operator, but you should be familiarize yourself with how pointers work anyway, and here's why:

When an object in memory no longer has a pointer referencing its memory address, it should be de-allocated or removed from memory. Removing unused objects to prevent them from filling up memory is known as memory management. In some older languages, managing memory pointers...