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C++20 STL Cookbook

Name: C++20 STL Cookbook
Author: Bill Weinman
ISBN: 9781803248714

by Bill Weinman

May 2022

Intermediate to advanced

450 pages

7h 12m

English

Packt Publishing

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C++20 STL Cookbook
ContributorsAbout the authorAbout the reviewer
Preface
About this bookPrerequisite knowledgeThe STL's power is derived from templates (a brief primer)This book uses the C++20 standardBraced initializationHiding the std:: namespaceType aliases with usingAbbreviated function templatesThe C++20 format() functionUse the STL to solve real-world problemsWho this book is forWhat this book coversThe recipes in this book use the GCC compilerDownload the example code filesConventions usedSectionsHow to do it…How it works…There's more…See also…Get in touchShare Your Thoughts
Chaper 1: New C++20 Features
Technical requirementsFormat text with the new format libraryHow to do it…How it works…There's more…Use compile-time vectors and strings with constexprHow to do it…How it works…Safely compare integers of different typesHow to do it…How it works…Use the "spaceship" operator <=> for three-way comparisonsHow to do it…How it works…There's more…Easily find feature test macros with the <version> headerHow to do it…How it works…Create safer templates with concepts and constraintsHow to do it…How it works…There's more…Avoid re-compiling template libraries with modulesHow to do it…How it works…Create views into containers with rangesHow to do it…How it works…There's more…
Chapter 2: General STL Features
Technical requirementsUse the new span class to make your C-arrays saferHow to do it…How it works…Use structured binding to return multiple valuesHow to do it…How it works…Initialize variables within if and switch statementsHow to do it…How it works…There's more…Use template argument deduction for simplicity and clarityHow to do it…How it works…There's more…Use if constexpr to simplify compile-time decisionsHow to do it…How it works…
Chapter 3: STL Containers
A quick overview of the STL container typesSequential containersAssociative containersContainer adaptersTechnical requirementsUse uniform erasure functions to delete items from a containerHow to do it…How it works…Delete items from an unsorted vector in constant timeHow to do it…How it works…Access vector elements directly and safelyHow to do it…How it works…There's more…Keep vector elements sortedHow to do it…How it works…There's more…Efficiently insert elements into a mapHow to do it…How it works…Efficiently modify the keys of map itemsHow to do it…How it works…There's more…Use unordered_map with custom keysHow to do it…How it works…Use set to sort and filter user inputHow to do it…How it works…A simple RPN calculator with dequeHow to do it…How it works…There's more…A word frequency counter with mapHow to do it…How it works…Find long sentences with a vector of vectorsHow to do it…How it works…A ToDo list using multimapHow to do it…How it works…
Chapter 4: Compatible Iterators
Iterators are fundamentalIterator categoriesIterator conceptsTechnical requirementsCreate an iterable rangeHow to do it…How it works…There's more…Make your iterators compatible with STL iterator traitsHow to do it…How it works…There's more…Use iterator adapters to fill STL containersHow to do it…How it works…Create a generator as iteratorsHow to do it…How it works…There's more…Use reverse iterator adapters to iterate backwardHow to do it…How it works…Iterate objects of unknown length with a sentinelHow to do it…How it works…Build a zip iterator adapterHow to do it…How it works…There's more…Create a random-access iteratorHow to do it…How it works…
Chapter 5: Lambda Expressions
Lambda expressionsClosuresTechnical requirementsUse lambdas for scoped reusable codeHow to do it…How it works…Use lambdas as predicates with the algorithm libraryHow to do it…How it works…Use std::function as a polymorphic wrapperHow to do it…How it works…There's more…Concatenate lambdas with recursionHow to do it…How it works…Combine predicates with logical conjunctionHow to do it…How it works…Call multiple lambdas with the same inputHow to do it…How it works…Use mapped lambdas for a jump tableHow to do it…How it works…
Chapter 6: STL Algorithms
Technical requirementsCopy from one iterator to anotherHow to do it…How it works…Join container elements into a stringHow to do it…How it works…There's more…Sort containers with std::sortHow to do it…How it works…Modify containers with std::transformHow to do it…How it works…Find items in a containerHow to do it…How it works…There's more…Limit the values of a container to a range with std::clampHow to do it…How it works…Sample data sets with std::sampleHow to do it…How it works…Generate permutations of data sequencesHow to do it…How it works…Merge sorted containersHow to do it…How it works…
Chapter 7: Strings, Streams, and Formatting
String formattingTechnical requirementsUse string_view as a lightweight string objectHow to do it…How it works…Concatenate stringsHow to do it…How it works…There's more…Why would I choose one over another?Transform stringsHow to do it…How it works…Format text with C++20's format libraryHow to do it…How it works…There's more…Trim whitespace from stringsHow to do it…How it works…Read strings from user inputHow to do it…How it works…Count words in a fileHow to do it…How it works…Initialize complex structures from file inputHow to do it…How it works…There's more…Customize a string class with char_traitsHow to do it…How it works…There's more…Parse strings with Regular ExpressionsHow to do it…How it works…
Chapter 8: Utility Classes
Technical requirementsManage optional values with std::optionalHow to do it…How it works…There's more…Use std::any for type safetyHow to do it…How it works…Store different types with std::variantDifferences from the primitive union structureHow to do it…How it works…Time events with std::chronoHow to do it…How it works…Use fold expressions for variadic tuplesFold expressionsHow to do it…How it works…There's more…Manage allocated memory with std::unique_ptrHow to do it…How it works…Share objects with std::shared_ptrHow to do it…How it works…Use weak pointers with shared objectsHow to do it…How it works…There's more…Share members of a managed objectHow to do it…How it works…Compare random number enginesHow to do it…How it works…There's more…Compare random number distribution generatorsHow to do it…How it works…

Chapter 9: Concurrency and Parallelism
Technical requirementsSleep for a specific amount of timeHow to do it…How it works…There's more…Use std::thread for concurrencyHow to do it…How it works…There's more…Use std::async for concurrencyHow to do it…How it works…Run STL algorithms in parallel with execution policiesHow to do it…How it works…Share data safely with mutex and locksHow to do it…How it works…There's more…Share flags and values with std::atomicHow to do it…How it works…There's more…Initialize threads with std::call_onceHow to do it…How it works…Use std::condition_variable to resolve the producer-consumer problemHow to do it…How it works…Implement multiple producers and consumersHow to do it…How it works…
Chapter 10: Using the File System
Technical requirementsSpecialize std::formatter for the path classHow to do it…How it works…Use manipulation functions with pathHow to do it…How it works…List files in a directoryHow to do it…How it works…There's more…Search directories and files with a grep utilityHow to do it…How it works…See also…Rename files with regex and directory_iteratorHow to do it…How it works…See also…Create a disk usage counterHow to do it…How it works…
Chapter 11: A Few More Ideas
Technical requirementCreate a trie class for search suggestionsHow to do it…How it works…Calculate the error sum of two vectorsHow to do it…How it works…There's more…Build your own algorithm: splitHow to do it…How it works…Leverage existing algorithms: gatherHow to do it…How it works…Remove consecutive whitespaceHow to do it…How it works…Convert numbers to wordsHow to do it…How it works…There's more…
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Overview

The "C++20 STL Cookbook" is a comprehensive guide to mastering the Standard Template Library (STL) with C++20. With practical examples and recipes, this book introduces you to the latest features of the language, enabling you to write better and more efficient code. By working through real-world problems, you'll gain actionable skills to leverage the full potential of the STL.

What this Book will help me do

Understand and effectively use new C++20 language features for solving modern programming problems.
Master the use of STL containers, algorithms, and iterators through practical, real-world recipes.
Learn to implement concurrency and synchronization using standard support classes in STL.
Explore advanced features like seamless formatting using std::format and efficient memory management.
Enhance your programming skills by replacing C-style code with modern STL functionalities.

Author(s)

Bill Weinman is an experienced software developer and technical instructor with a passion for teaching practical programming skills. With years of expertise in C++ and software development, he brings a wealth of knowledge to his writing. Bill is known for his clear explanations and hands-on approach, making technical concepts accessible to a wide audience.

Who is it for?

This book is ideal for intermediate to advanced C++ programmers who wish to deepen their understanding of the Standard Template Library, including its new features introduced in C++20. If you're familiar with basic coding and C++ concepts and are looking to optimize your code and learn efficient techniques, this is the perfect resource for you.

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