Programming with C++20
$19.99
Minimum price
$39.99
Suggested price

Programming with C++20

Concepts, Coroutines, Ranges, and more

About the Book

Programming with C++20 teaches programmers with C++ experience the new features of C++20 and how to apply them. It does so by assuming C++11 knowledge. Elements of the standards between C++11 and C++20 will be briefly introduced, if necessary. However, the focus is on teaching the features of C++20.

You will start with learning about the so-called big four Concepts, Coroutines, std::ranges, and modules. The big four a followed by smaller yet not less important features. You will learn about std::format, the new way to format a string in C++. In chapter 6, you will learn about a new operator, the so-called spaceship operator, which makes you write less code.

You then will look at various improvements of the language, ensuring more consistency and reducing surprises. You will learn how lambdas improved in C++20 and what new elements you can now pass as non-type template parameters. Your next stop is the improvements to the STL.

Of course, you will not end this book without learning about what happened in the constexpr-world.

About the Author

Andreas Fertig
Andreas Fertig

Andreas Fertig, CEO of Unique Code GmbH, is an experienced trainer and lecturer for C++ for standards 11 to 20.

Andreas is involved in the C++ standardization committee, in which the new standards are developed. At international conferences, he presents how code can be written better. He publishes specialist articles, e.g., for iX magazine, and has published several textbooks on C++.

With C++ Insights (cppinsights.io), Andreas has created an internationally recognized tool that enables users to look behind the scenes of C++ and thus to understand constructs even better.

Before working as a trainer and consultant, he worked for Philips Medizin Systeme GmbH for ten years as a C++ software developer and architect focusing on embedded systems.

His web presence is andreasfertig.info.

Table of Contents

  • 1 Concepts: Predicates for strongly typed generic code
    • 1.1 Programming before Concepts
    • 1.2 Start using Concepts
    • 1.3 Application areas for Concepts
    • 1.4 The requires-expression : The runway for Concepts
    • 1.5 Requirement kinds in a requires-expression
      • 1.5.1 The simple requirement
      • 1.5.2 The nested requirement
      • 1.5.3 The compound requirement
      • 1.5.4 The type requirement
    • 1.6 Ad hoc constraints
    • 1.7 Defining a concept
    • 1.8 Testing requirements
    • 1.9 Abbreviated function template with auto as a generic parameter
      • 1.9.1 What does such a construct do?
      • 1.9.2 Exemplary use case: Requiring a parameter type to be an invocable
    • 1.10 Using a constexpr function in a concept
    • 1.11 Concepts and constrained auto types
      • 1.11.1 Constrained auto variables
      • 1.11.2 Constrained auto return-type
    • 1.12 The power of Concepts: requires instead of enable_if
      • 1.12.1 Call method based in requires
      • 1.12.2 Conditional copy operations
      • 1.12.3 Conditional destructor
      • 1.12.4 Conditional methods
    • 1.13 Concepts ordering
      • 1.13.1 Subsumption rule details
      • 1.13.2 One more thing, never say not
    • 1.14 Improved error message
    • 1.15 Existing Concepts
  • 2 Coroutines: Suspending functions
    • 2.1 Regular functions and their control flow
    • 2.2 What are Coroutines
      • 2.2.1 Generating a sequence with coroutines
    • 2.3 The elements of Coroutines in C++
      • 2.3.1 Stackless Coroutines in C++
      • 2.3.2 The new kids on the block: co_await, co_return and co_yield
      • 2.3.3 The generator
      • 2.3.4 The promise_type
      • 2.3.5 An iterator for generator
      • 2.3.6 Coroutine customization points
      • 2.3.7 Coroutines restrictions
    • 2.4 Writing a byte-stream parser the old way
    • 2.5 A byte-stream parser with Coroutines
      • 2.5.1 Writing the Parse function as coroutine
      • 2.5.2 Creating an Awaitable type
      • 2.5.3 A more flexible promise_type
      • 2.5.4 Another generator the FSM
      • 2.5.5 Simulating a network byte stream
      • 2.5.6 Plugging the pieces together
    • 2.6 A different strategy of the Parse generator
    • 2.7 Using a coroutine with custom new / delete
    • 2.8 Using a coroutine with a custom allocator
    • 2.9 Exceptions in coroutines
  • 3 Ranges: The next generation STL
    • 3.1 Motivation
      • 3.1.1 Avoid code duplication
      • 3.1.2 Consistency
      • 3.1.3 Safety
      • 3.1.4 Composability
    • 3.2 The who is who of ranges
    • 3.3 A range
      • 3.3.1 What is a common_range?
      • 3.3.2 A sized_range
    • 3.4 A range algorithm
      • 3.4.1 Projections for range algorithms
    • 3.5 A view into a range
    • 3.6 A range adaptor
      • 3.6.1 A custom range adaptor
    • 3.7 The new ranges namespaces
    • 3.8 Ranges Concepts
    • 3.9 Views
    • 3.10 Creating a custom range
      • 3.10.1 Implementing the view
      • 3.10.2 A range adaptor for custom_take_view
      • 3.10.3 Add the pipe-syntax to custom_take_view
      • 3.10.4 A more generalized pipe-syntax implementation
  • 4 Modules: The superior way of includes
    • 4.1 Background about the need for modules
      • 4.1.1 The include hell
      • 4.1.2 I like to have secrets
    • 4.2 Creating modules
      • 4.2.1 A header unit
      • 4.2.2 A named module
    • 4.3 Applying modules to an existing code base
      • 4.3.1 Down with namespace details
      • 4.3.2 Now I can hide my secrets from you...
      • 4.3.3 What you gain
      • 4.3.4 Templates in modules
      • 4.3.5 Down with DEBUG
      • 4.3.6 In-line definitions of class member functions
      • 4.3.7 There are some limits
  • 5 std::format: Modern & type-safe text formatting
    • 5.1 Formatting a string before C++20
      • 5.1.1 Formatting a stock index with iostreams
      • 5.1.2 Formatting a stock index with printf
    • 5.2 Formatting a string using std::format
      • 5.2.1 std::format specifiers
      • 5.2.2 Escaping
      • 5.2.3 Localization
      • 5.2.4 Formatting floating-point numbers
    • 5.3 Formatting a custom type
      • 5.3.1 Writing a custom formatter
      • 5.3.2 Parsing a custom format specifier
    • 5.4 Referring to a format argument
    • 5.5 Using a custom buffer
      • 5.5.1 Formatting into a dynamically sized buffer
      • 5.5.2 Formatting into a fixed sized buffer
    • 5.6 Writing our own logging function
      • 5.6.1 Prefer make_format_args when forwarding an argument pack
      • 5.6.2 Create the format specifier at compile-time
      • 5.6.3 Formatting the time
  • 6 Three-way comparisons: Simplify your comparisons
    • 6.1 Writing a class with equal comparison
      • 6.1.1 Comparing different types
      • 6.1.2 Less hand-written code with operator reverse, rewrite and =default
    • 6.2 Writing a class with ordering comparison, pre C++20
    • 6.3 Writing a class with ordering comparison in C++20
      • 6.3.1 Member-wise comparison with =default
    • 6.4 The different comparison categories
      • 6.4.1 The comparison categories
      • 6.4.2 The comparison strength: strong or weak
      • 6.4.3 Another comparison strength: partial ordering
      • 6.4.4 Named comparison functions
    • 6.5 Converting between comparison categories
    • 6.6 New operator abilities: reverse and rewrite
    • 6.7 The power of the default spaceship
    • 6.8 Applying a custom sort order
    • 6.9 Spaceship-operation interaction with existing code
  • 7 Lambdas in C++20: New features
    • 7.1 [=, this] as a lambda capture
    • 7.2 Default-constructible lambdas
    • 7.3 Captureless lambdas in unevaluated contexts
    • 7.4 Lambdas in generic code
      • 7.4.1 Lambdas with templated-head
      • 7.4.2 Variadic lambda arguments
      • 7.4.3 Forwarding variadic lambda arguments
    • 7.5 Pack expansions in lambda init-captures
    • 7.6 Restricting lambdas with Concepts
  • 8 Aggregates: Designated initializers and more
    • 8.1 What is an aggregate
    • 8.2 Designated initializers
      • 8.2.1 Designated initializers in C
      • 8.2.2 Designated initializers in C++20
      • 8.2.3 Initializing a subset of an aggregate with designated initializers
      • 8.2.4 Initialize a subset with designated initializers without in-class member initializers
      • 8.2.5 Named arguments in C++: Aggregates with designated initializers
      • 8.2.6 Overload resolution and designated initializers
    • 8.3 Direct-initialization for aggregates
      • 8.3.1 Initialization forms: Braced or parenthesis initialization
      • 8.3.2 Aggregates with user-declared constructors
    • 8.4 Class Template Argument Deduction for aggregates
  • 9 Class-types as non-type template parameters
    • 9.1 What are non-type template parameters again
    • 9.2 The requirements for class types as non-type template parameters
    • 9.3 Class types as non-type template parameters
      • 9.3.1 A first contact with class types as NTTP
      • 9.3.2 What compile-time data do we have
    • 9.4 Building a format function with specifier count check
      • 9.4.1 A first print function
      • 9.4.2 Optimizing the format string creation
      • 9.4.3 Checking the number of specifiers in a format string
      • 9.4.4 Checking if type and specifiers do match
      • 9.4.5 Enable more use-cases and prevent mistakes
  • 10 New STL elements
    • 10.1 bit_cast: Reinterpreting your objects
    • 10.2 endian: Endianness detection at compile time
    • 10.3 to_array
    • 10.4 span: A view of continuous memory
    • 10.5 source_location: The modern way for __FUNCTION__
      • 10.5.1 Writing a custom assert function
      • 10.5.2 Writing a custom assert function with C++20
      • 10.5.3 Writing a custom log function with C++20
    • 10.6 contains for all associative containers
    • 10.7 starts_with and ends_with for std::string
  • 11 Language Updates
    • 11.1 Range-based for-loops with initializers
      • 11.1.1 Using a counter-variable in a range-based for-loop
      • 11.1.2 A workaround for temporaries
    • 11.2 New Attributes
      • 11.2.1 likely / unlikely
      • 11.2.2 no_unique_address
    • 11.3 using enums
    • 11.4 conditional explicit
      • 11.4.1 Writing a well-behaved wrapper
      • 11.4.2 Communicate your intention, explicitly
  • 12 Doing (more) things at compile-time
    • 12.1 The two worlds: compile- vs. run-time
      • 12.1.1 The benefit of compile-time execution
    • 12.2 is_constant_evaluated: Is this a constexpr-context?
      • 12.2.1 Different things at compile- and run-time
      • 12.2.2 is_constant_evaluated is a run-time value
    • 12.3 Less restrictive constexpr-function requirements
      • 12.3.1 new / delete: Dynamic allocations during compile-time
      • 12.3.2 A constexpr std::vector
    • 12.4 Utilizing the new compile-time world: Sketching a car racing game
    • 12.5 consteval: Do things guaranteed at compile-time
      • 12.5.1 as_constant a use-case for consteval
      • 12.5.2 Force compile-time evaluation for compile-time checks
      • 12.5.3 is_constant_evaluated doesn't make it compile-time
    • 12.6 constinit: Initialize a non- const object at compile-time
      • 12.6.1 The static initialization order problem
      • 12.6.2 Ensure compile-time initialization
  • Acronyms
  • Bibliography
  • Index

The Leanpub 60-day 100% Happiness Guarantee

Within 60 days of purchase you can get a 100% refund on any Leanpub purchase, in two clicks.

See full terms

Do Well. Do Good.

Authors have earned$11,712,765writing, publishing and selling on Leanpub, earning 80% royalties while saving up to 25 million pounds of CO2 and up to 46,000 trees.

Learn more about writing on Leanpub

Free Updates. DRM Free.

If you buy a Leanpub book, you get free updates for as long as the author updates the book! Many authors use Leanpub to publish their books in-progress, while they are writing them. All readers get free updates, regardless of when they bought the book or how much they paid (including free).

Most Leanpub books are available in PDF (for computers), EPUB (for phones and tablets) and MOBI (for Kindle). The formats that a book includes are shown at the top right corner of this page.

Finally, Leanpub books don't have any DRM copy-protection nonsense, so you can easily read them on any supported device.

Learn more about Leanpub's ebook formats and where to read them

Write and Publish on Leanpub

You can use Leanpub to easily write, publish and sell in-progress and completed ebooks and online courses!

Leanpub is a powerful platform for serious authors, combining a simple, elegant writing and publishing workflow with a store focused on selling in-progress ebooks.

Leanpub is a magical typewriter for authors: just write in plain text, and to publish your ebook, just click a button. (Or, if you are producing your ebook your own way, you can even upload your own PDF, EPUB and/or MOBI files and then publish with one click!) It really is that easy.

Learn more about writing on Leanpub

Top Books

  1. #1

    Recipes for Decoupling

    Matthias Noback

    Write software that survives

  2. #2
  3. #3

    CQRS by Example

    Carlos Buenosvinos, Christian Soronellas, and Keyvan Akbary
    • Leverage your Software Architecture skills by learning everything about CQRS in detail with lots of examples
    • Develop faster applications by applying CQRS and fostering Read Models and Projections
    • Learn how to apply CQRS into a brownfield project from a pragmatic approach
  4. #4
  5. #5

    Ansible for DevOps

    Jeff Geerling

    Ansible is a simple, but powerful, server and configuration management tool. Learn to use Ansible effectively, whether you manage one server—or thousands.

  6. #6
  7. #7

    Jetpack Compose internals

    Jorge Castillo

    Jetpack Compose is the future of Android UI. Master how it works internally and become a more efficient developer with it. You'll also find it valuable if you are not an Android dev. This book provides all the details to understand how the Compose compiler & runtime work, and how to create a client library using them.

  8. #8

    The PowerShell Scripting and Toolmaking Book

    Don Jones and Jeff Hicks

    Learn the patterns, practices, and details of PowerShell Scripting and Toolmaking from the industry's two most recognized experts on the subject.

  9. #9

    The C4 model for visualising software architecture

    Simon Brown

    A guide to visualising your software architecture with the C4 model.

  10. #10

    Mastering STM32 - Second Edition

    Carmine Noviello

    With more than 1200 microcontrollers, STM32 is probably the most complete ARM Cortex-M platform on the market. This book aims to be the most complete guide around introducing the reader to this exciting MCU portfolio from ST Microelectronics and its official CubeHAL and STM32CubeIDE development environment.

Top Bundles

  1. #1

    Software Architecture

    2 Books

    "Software Architecture for Developers" is a practical and pragmatic guide to modern, lightweight software architecture, specifically aimed at developers. You'll learn:The essence of software architecture.Why the software architecture role should include coding, coaching and collaboration.The things that you really need to think about before...
    #1

    Software Architecture

    2 Books

    "Software Architecture for Developers" is a practical and pragmatic guide to modern, lightweight software architecture, specifically aimed at developers. You'll learn:The essence of software architecture.Why the software architecture role should include coding, coaching and collaboration.The things that you really need to think about before...
  2. #2

    CCIE Service Provider Ultimate Study Bundle

    2 Books

    Piotr Jablonski, Lukasz Bromirski, and Nick Russo have joined forces to deliver the only CCIE Service Provider training resource you'll ever need. This bundle contains a detailed and challenging collection of workbook labs, plus an extensively detailed technical reference guide. All of us have earned the CCIE Service Provider certification...
    #2

    CCIE Service Provider Ultimate Study Bundle

    2 Books

    Piotr Jablonski, Lukasz Bromirski, and Nick Russo have joined forces to deliver the only CCIE Service Provider training resource you'll ever need. This bundle contains a detailed and challenging collection of workbook labs, plus an extensively detailed technical reference guide. All of us have earned the CCIE Service Provider certification...
  3. #3

    Django for Beginners/APIs/Professionals

    3 Books

    #3

    Django for Beginners/APIs/Professionals

    3 Books

  4. #4

    Pattern-Oriented Memory Forensics and Malware Detection

    2 Books

    This training bundle for security engineers and researchers, malware and memory forensics analysts includes two accelerated training courses for Windows memory dump analysis using WinDbg. It is also useful for technical support and escalation engineers who analyze memory dumps from complex software environments and need to check for possible...
    #4

    Pattern-Oriented Memory Forensics and Malware Detection

    2 Books

    This training bundle for security engineers and researchers, malware and memory forensics analysts includes two accelerated training courses for Windows memory dump analysis using WinDbg. It is also useful for technical support and escalation engineers who analyze memory dumps from complex software environments and need to check for possible...
  5. #5

    Architecture and Decoupling

    2 Books

    This bundle combines two of the most recent books by Matthias Noback, which together offer some serious material that will definitely level up your skills in web application development with a focus on long term maintainability, testing, and domain-driven design.
    #5

    Architecture and Decoupling

    2 Books

    This bundle combines two of the most recent books by Matthias Noback, which together offer some serious material that will definitely level up your skills in web application development with a focus on long term maintainability, testing, and domain-driven design.
  6. #6

    All the Books of The Medical Futurist

    6 Books

    We put together the most popular books from The Medical Futurist to provide a clear picture about the major trends shaping the future of medicine and healthcare. Digital health technologies, artificial intelligence, the future of 20 medical specialties, big pharma, data privacy, digital health investments and how technology giants such as Amazon...
    #6

    All the Books of The Medical Futurist

    6 Books

    We put together the most popular books from The Medical Futurist to provide a clear picture about the major trends shaping the future of medicine and healthcare. Digital health technologies, artificial intelligence, the future of 20 medical specialties, big pharma, data privacy, digital health investments and how technology giants such as Amazon...
  7. #7

    Effective Kotlin bundle

    2 Books

    The package of the most essential books for Kotlin developers, to become great developers. Effective Kotlin and Kotlin Coroutines by Marcin Moskała are both famous positions, well known and commonly recommended.
    #7

    Effective Kotlin bundle

    2 Books

    The package of the most essential books for Kotlin developers, to become great developers. Effective Kotlin and Kotlin Coroutines by Marcin Moskała are both famous positions, well known and commonly recommended.
  8. #8

    The Python Craftsman

    3 Books

    The Python Craftsman series comprises The Python Apprentice, The Python Journeyman, and The Python Master. The first book is primarily suitable for programmers with some experience of programming in another language. If you don't have any experience with programming this book may be a bit daunting. You'll be learning not just a programming...
    #8

    The Python Craftsman

    3 Books

    The Python Craftsman series comprises The Python Apprentice, The Python Journeyman, and The Python Master. The first book is primarily suitable for programmers with some experience of programming in another language. If you don't have any experience with programming this book may be a bit daunting. You'll be learning not just a programming...
  9. #9

    Cisco CCNA 200-301 Complet

    4 Books

    Ce lot comprend les quatre volumes du guide préparation à l'examen de certification Cisco CCNA 200-301.
    #9

    Cisco CCNA 200-301 Complet

    4 Books

    Ce lot comprend les quatre volumes du guide préparation à l'examen de certification Cisco CCNA 200-301.
  10. #10

    CCDE Practical Studies (All labs)

    3 Books

    CCDE lab
    #10

    CCDE Practical Studies (All labs)

    3 Books

    CCDE lab

Publish Early, Publish Often

  • Path
  • There are many paths, but the one you're on right now on Leanpub is:
  • › Programming-with-cpp20

*   *   *

Leanpub is copyright © 2010-2022 Ruboss Technology Corp.
All rights reserved.

This site is protected by reCAPTCHA
and the Google Privacy Policy and Terms of Service apply.