8. Date and Time Libraries | Learning Boost C++

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Learning Boost C++

By : Mukherjee

4.5 (2)

Learning Boost C++

4.5 (2)

By: Mukherjee

Overview of this book

If you are a C++ programmer who has never used Boost libraries before, this book will get you up-to-speed with using them. Whether you are developing new C++ software or maintaining existing code written using Boost libraries, this hands-on introduction will help you decide on the right library and techniques to solve your practical programming problems.

Preface

Preface

What this book covers

What you need for this book

Who this book is for

Conventions

Reader feedback

Customer support

Free Chapter

1. Introducing Boost

1. Introducing Boost

How it all started

What is Boost?

Getting started with Boost libraries

Self-test questions

Summary

2. The First Brush with Boost's Utilities

2. The First Brush with Boost's Utilities

Simple data structures

Working with heterogeneous values

Handling command-line arguments

Other utilities and compile-time checks

Self-test questions

Summary

References

3. Memory Management and Exception Safety

3. Memory Management and Exception Safety

Dynamic memory allocation and exception safety

Smart pointers

Self-test questions

Summary

References

4. Working with Strings

4. Working with Strings

Text processing with Boost String Algorithms library

Splitting text using the Boost Tokenizer library

Regular expressions using Boost.Regex

Self-test questions

Summary

5. Effective Data Structures beyond STL

5. Effective Data Structures beyond STL

Boost Container library

Fast lookups using Boost Unordered containers

Containers for dynamically-allocated objects

Expressive initialization and assignment using Boost.Assign

Iteration patterns using Boost.Iterator

Self-test questions

Summary

References

6. Bimap and Multi-index Containers

6. Bimap and Multi-index Containers

Containers for multi-criteria lookups

Boost Multi-index containers

Boost Bimap

Self-test questions

Summary

References

7. Higher Order and Compile-time Programming

7. Higher Order and Compile-time Programming

Higher order programming with Boost

Compile-time programming with Boost

Domain Specific Embedded Languages

Self-test questions

Summary

References

8. Date and Time Libraries

8. Date and Time Libraries

Date and time calculations with Boost Date Time

Using Chrono to measure time

Measuring program performance using Boost Timer

Self-test questions

Summary

References

9. Files, Directories, and IOStreams

9. Files, Directories, and IOStreams

Managing files and directories with Boost Filesystem

Extensible I/O with Boost IOStreams

Self-test questions

Summary

10. Concurrency with Boost

10. Concurrency with Boost

Creating concurrent tasks with Boost Thread

Managing shared data

Boost Coroutine

Self-test questions

Summary

References

11. Network Programming Using Boost Asio

11. Network Programming Using Boost Asio

Task execution with Asio

Network I/O using Asio

Self-test questions

Summary

References

A. C++11 Language Features Emulation

A. C++11 Language Features Emulation

RAII

Copy semantics

Move semantics and rvalue references

C++11 auto and Boost.Auto

Range-based for-loops

C++11 exception-handling improvements

Self-test questions

References

Index

Index

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Measuring program performance using Boost Timer

As programmers, we often need to measure performance of a section of code. While there are several excellent profiling tools available for this purpose, sometimes, being able to instrument our own code is both simple and more precise. The Boost Timer library provides an easy-to-use, portable interface for measuring the execution times and reporting them by instrumenting your code. It is a separately compiled library, not header-only, and internally uses Boost Chrono.

cpu_timer

The boost::timer::cpu_timer class is used to measure the execution time of a section of code. In the following example, we write a function that reads the contents of a file and returns it in a dynamic array wrapped in a unique_ptr (see Chapter 3, Memory Management and Exception Safety). It also calculates and prints the time taken to read the file using cpu_timer.

Listing 8.10: Using cpu_timer

 1 #include <fstream>
 2 #include <memory>
 3 #include <boost...

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Learning Boost C++

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