We are surrounded by strings. Strings of bits make integers and floating-point numbers. Strings of digits make telephone numbers, and strings of characters make words. Long strings of characters make web pages, and longer strings yet make books. Extremely long strings represented by the letters A, C, G and T are in geneticists' databases and deep inside the cells of many readers of this book.
Programming is making the computer do whatever we want it to do. And program (or software) is the name given to a series of computer code to complete a specific task. Sometimes the procedure of writing a program is also named as solving a problem because all programs are written to do a specific task, in other words to solve a problem you faced in real world. Because of the hardware design, com…
My first experience with Amazon Web Services was on March 14, 2006. I had seen a press release announcing a new web-based storage service called Simple Storage Service (S3), and I remember thinking how strange it seemed that Amazon would be offering such a service. Nevertheless, I signed up for an account and started reading the documentation. I was blown away by S3. The simple, affordable pric…
Python is an easy-to-learn programming language that has some really useful features for a beginning programmer. The code is quite easy to read when compared to other programming languages, and it has an interactive shell into which you can enter your programs and see them run. In addition to its simple language structure and an interactive shell with which to experiment, Python has some featur…
In this book, we will explore the beautiful world of graphical user interfaces (GUIs) using the Python programming language. Along the way, we will talk to networks, queues, the OpenGL graphical library, and many more technologies. This is a programming cookbook. Every chapter is self-contained and explains a certain programming solution. We will start very simply, yet throughout this book we…
The study of computer science should cover not only the principles on which computational processing is based, but should also reflect the current state of knowledge of these fields. Today, the technology requires that professionals from all branches of computer science know both the software and hardware whose interaction at all levels is the key to understanding the basics of computational pr…
Python is a versatile programming language that can be used for a wide range of technical tasks—computation, statistics, data analysis, game development, and more. Though Python is easy to learn, its range of features means there are many aspects of it that even experienced Python developers don't know about. Even if you're confident with the basics, its logic and syntax, by digging deeper yo…
The open source geographic information system, QGIS, at version 2.6 now rivals even the most expensive commercial GIS software in both functionality and usability. It is also a showcase of the best geospatial open source technology available. It is not just a project in itself, but the marriage of dozens of open source projects in a single, clean interface. Geospatial technology is not just the…
Having abandoned the true way, I fell into a deep sleep and awoke in a deep dark wood. I set out to escape the wood, but my path was blocked by a lion. As I fled to lower ground, a figure appeared before me. “Have mercy on me, whatever you are,” I cried, “whether shade or living human.” “Not a man, though once I was. My parents were from Lombardy. I was born sub Julio and lived in R…
As many of you may know, Syncfusion is a provider of software components for the Microsoft platform. This puts us in the exciting but challenging position of always being on the cutting edge. Whenever platforms or tools are shipping out of Microsoft, which seems to be about every other week these days, we have to educate ourselves, quickly.
Welcome to RabbitMQ in Action. If you're like me, possibly you're thinking, "Should I read past page one ?" Also, too many technology books are written and published, and not all merit more than superficial attention.
Criminal Law uses a two-step process to augment learning, called the appliedapproach. First, after building a strong foundation from scratch, Criminal Lawintroduces you to crimes and defenses that have been broken down into separate components. It is so much easier to memorize and comprehend the subject matter when it is simplified this way. However, becoming proficient in the law takes more…
In the mid-2000s, some of the staff at the University of Cambridge noticed that there were fewer students applying to study computer science each year, and that they didn't have very much experience. Something had to be done about this situation. The answer was the Raspberry Pi: a small, inexpensive computer which makes programming as accessible and as fun as possible. The idea is that students…
Programming languages matter. They affect the reliability, security, and efficiency of the code you write, as well as how easy it is to read, refactor, and extend. The languages you know can also change how you think, influencing the way you design software even when you’re not using them. We wrote this book because we believe in the importance of programming languages, and that OCaml in part…
Signals can be divided into three categories: continuous-time (analog) signals, discrete-time signals, and digital signals. The signals that we encounter daily are mostly analog signals. These signals are defined continuously in time, have an infinite range of amplitude values, and can be processed using analog electronics containing both active and passive circuit elements. Discrete-time sig…
Having opened this cookbook, you are probably eager to inject some of the ungainly strings of parentheses and question marks you find in its chapters right into your code. If you are ready to plug and play, be our guest: the practical regular expressions are listed and described in Chapters 4 through 9. But the initial chapters of this book may save you a lot of time in the long run. For instan…
Regular expressions are a language used for parsing and manipulating text. They are often used to perform complex search-and-replace operations, and to validate that text data is well-formed. Today, regular expressions are included in most program- ming languages, as well as in many scripting languages, editors, applications, databases, and command-line tools. This book aims to give quick acce…
As many of you may know, Syncfusion is a provider of software components for the Microsoft platform. This puts us in the exciting but challenging position of always being on the cutting edge. Whenever platforms or tools are shipping out of Microsoft, which seems to be about every other week these days, we have to educate ourselves, quickly
HTTP is an application-level protocol that defines operations for transferring representations between clients and servers. In this protocol, methods such as GET, POST, PUT, and DELETE are operations on resources. This protocol eliminates the need for you to invent application-specific operations such as createOrder, getStatus, updateStatus, etc. How much you can benefit from the HTTP infrastru…
This book is designed to be read by chapter, but the chapters are not in any particular order. The book is split into two parts, with eight chapters forming its core and three appendixes included as supplementary material. Despite the fact that you can read these topics in any order that you’d like, it is recommended that you read the entire book. Lots of the topics play off of each other, an…
In July 2004 David Heinemeier Hansson released Ruby on Rails, a Web framework for the Ruby pro- gramming language. It quickly gained momentum and became notorious for being a highly productive Model-View-Controller (MVC) Web framework that was particularly well suited to Agile development. Favoring sensible conventions over verbose confi guration fi les, Rails (as it is often called for shor…
This book would not have been possible without the tireless efforts of dozens—possibly even dozens of dozens!—of people. First, my wife, Laura, who not only tolerated my all-night writing sessions and endless requests for feedback on story ideas, but also at various times pinch hit as literary agent, proofreader, sanity checker, and stop-reading-the-Internet- and-get-back-to-work!-er. This …
Astute readers such as yourself may be wondering whether the title of this book, Safe C++, presumes that the C++ programming language is somehow unsafe. Good catch! That is indeed the presumption. The C++ language allows programmers to make all kinds of mistakes, such as accessing memory beyond the bounds of an allocated array, or reading memory that was never initialized, or allocating memory …
This book was written with the beginner in mind. Each of the 24 hours in this book is short and succinct, usually teaching one basic subject and building on previous hours. The subjects covered in this book are geared primarily toward rendering on the small Windows Phone 7 screen. A lot of attention is given to sprite animation, since this seems to be the main focus of games for this platform. …
When using the SG procedures—PROC SGPLOT, PROC SGPANEL, PROC SGSCATTER, and PROC SGRENDER—the ODS GRAPHICS statement is optional. However, doing so can change a number of important features of the output image (such as the size and file format); and with new SAS versions, ODS Graphics supports new image formats. In particular, this chapter examines the EMF image-file format in more detail, …
Before we start learning Scala, let's first understand what functional programming (FP) is. You may have used a spreadsheet while working. In a spreadsheet, there is a bunch of equations and we enter values in the given cells for these equations. We get the answers through these equations. When you enter the same values again, you get the same answer and there are no fallouts. At the core of FP…