Book Image

Modern C++: Efficient and Scalable Application Development

By : Richard Grimes, Marius Bancila
Book Image

Modern C++: Efficient and Scalable Application Development

By: Richard Grimes, Marius Bancila

Overview of this book

C++ is one of the most widely used programming languages. It is fast, flexible, and used to solve many programming problems. This Learning Path gives you an in-depth and hands-on experience of working with C++, using the latest recipes and understanding most recent developments. You will explore C++ programming constructs by learning about language structures, functions, and classes, which will help you identify the execution flow through code. You will also understand the importance of the C++ standard library as well as memory allocation for writing better and faster programs. Modern C++: Efficient and Scalable Application Development deals with the challenges faced with advanced C++ programming. You will work through advanced topics such as multithreading, networking, concurrency, lambda expressions, and many more recipes. By the end of this Learning Path, you will have all the skills to become a master C++ programmer. This Learning Path includes content from the following Packt products: • Beginning C++ Programming by Richard Grimes • Modern C++ Programming Cookbook by Marius Bancila • The Modern C++ Challenge by Marius Bancila
Table of Contents (24 chapters)
Title Page
Copyright
About Packt
Contributors
Preface
12
Math Problems
13
Language Features
14
Strings and Regular Expressions
15
Streams and Filesystems
16
Date and Time
17
Algorithms and Data Structures
Index

Using the Standard Library


In this example, we will develop a simple parser for Comma Separated Value (CSV) files. The rules we will follow are as follows:

  • Each record will occupy one line, and newline indicates a new record
  • Fields in the record are separated by commas, unless they are within a quoted string
  • Strings can be quoted using single (') or double quotes ("), in which case they can contain commas as part of the string
  • Quotes immediately repeated ('' or "") is a literal, and a part of the string rather than a delimiter of a string
  • If a string is quoted, then spaces outside of the string are ignored

This is a very basic implementation, and omits the usual requirement that quoted strings can contain newlines.

In this example, much of the manipulation will be using string objects as containers of individual characters.

Start by creating a folder for the chapter called Chapter_08 in the folder for this book. In that folder, create a file called csv_parser.cpp. Since the application will use...