You're reading from C++20 STL Cookbook Leverage the latest features of the STL to solve real-world problems

Product type Paperback

Published in May 2022

Publisher Packt

ISBN-13 9781803248714

Length 450 pages

Edition 1st Edition

Tools

STL

Concepts

Application Development

Author (1):

Bill Weinman

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Table of Contents (13) Chapters

Preface

Who this book is for
What this book covers
Conventions used
Sections
Get in touch
Share Your Thoughts

1. Chaper 1: New C++20 Features

Technical requirements
Format text with the new format library
Use compile-time vectors and strings with constexpr
Safely compare integers of different types
Use the "spaceship" operator <=> for three-way comparisons
Easily find feature test macros with the <version> header
Create safer templates with concepts and constraints
Avoid re-compiling template libraries with modules
Create views into containers with ranges

2. Chapter 2: General STL Features FREE CHAPTER

Technical requirements
Use the new span class to make your C-arrays safer
Use structured binding to return multiple values
Initialize variables within if and switch statements
Use template argument deduction for simplicity and clarity
Use if constexpr to simplify compile-time decisions

3. Chapter 3: STL Containers

A quick overview of the STL container types
Technical requirements
Use uniform erasure functions to delete items from a container
Delete items from an unsorted vector in constant time
Access vector elements directly and safely
Keep vector elements sorted
Efficiently insert elements into a map
Efficiently modify the keys of map items
Use unordered_map with custom keys
Use set to sort and filter user input
A simple RPN calculator with deque
A word frequency counter with map
Find long sentences with a vector of vectors
A ToDo list using multimap

4. Chapter 4: Compatible Iterators

Iterators are fundamental
Technical requirements
Create an iterable range
Make your iterators compatible with STL iterator traits
Use iterator adapters to fill STL containers
Create a generator as iterators
Use reverse iterator adapters to iterate backward
Iterate objects of unknown length with a sentinel
Build a zip iterator adapter
Create a random-access iterator

5. Chapter 5: Lambda Expressions

Lambda expressions
Technical requirements
Use lambdas for scoped reusable code
Use lambdas as predicates with the algorithm library
Use std::function as a polymorphic wrapper
Concatenate lambdas with recursion
Combine predicates with logical conjunction
Call multiple lambdas with the same input
Use mapped lambdas for a jump table

6. Chapter 6: STL Algorithms

Technical requirements
Copy from one iterator to another
Join container elements into a string
Sort containers with std::sort
Modify containers with std::transform
Find items in a container
Limit the values of a container to a range with std::clamp
Sample data sets with std::sample
Generate permutations of data sequences
Merge sorted containers

7. Chapter 7: Strings, Streams, and Formatting

String formatting
Technical requirements
Use string_view as a lightweight string object
Concatenate strings
Transform strings
Format text with C++20's format library
Trim whitespace from strings
Read strings from user input
Count words in a file
Initialize complex structures from file input
Customize a string class with char_traits
Parse strings with Regular Expressions

8. Chapter 8: Utility Classes

Technical requirements
Manage optional values with std::optional
Use std::any for type safety
Store different types with std::variant
Time events with std::chrono
Use fold expressions for variadic tuples
Manage allocated memory with std::unique_ptr
Share objects with std::shared_ptr
Use weak pointers with shared objects
Share members of a managed object
Compare random number engines
Compare random number distribution generators

9. Chapter 9: Concurrency and Parallelism

Technical requirements
Sleep for a specific amount of time
Use std::thread for concurrency
Use std::async for concurrency
Run STL algorithms in parallel with execution policies
Share data safely with mutex and locks
Share flags and values with std::atomic
Initialize threads with std::call_once
Use std::condition_variable to resolve the producer-consumer problem
Implement multiple producers and consumers

10. Chapter 10: Using the File System

Technical requirements
Specialize std::formatter for the path class
Use manipulation functions with path
List files in a directory
Search directories and files with a grep utility
Rename files with regex and directory_iterator
Create a disk usage counter

11. Chapter 11: A Few More Ideas

Technical requirement
Create a trie class for search suggestions
Calculate the error sum of two vectors
Build your own algorithm: split
Leverage existing algorithms: gather
Remove consecutive whitespace
Convert numbers to words
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The code files for this chapter can be found on GitHub at https://github.com/PacktPublishing/CPP-20-STL-Cookbook/tree/main/chap08.

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Table of Contents (13) Chapters

Technical requirements

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Table of Contents (13) Chapters

Technical requirements

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