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Modern C++ Programming Cookbook

You're reading from   Modern C++ Programming Cookbook Master Modern C++ with comprehensive solutions for C++23 and all previous standards

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Product type Paperback
Published in Feb 2024
Publisher Packt
ISBN-13 9781835080542
Length 816 pages
Edition 3rd Edition
Languages
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Author (1):
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Marius Bancila Marius Bancila
Author Profile Icon Marius Bancila
Marius Bancila
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Toc

Table of Contents (15) Chapters Close

Preface 1. Learning Modern Core Language Features FREE CHAPTER 2. Working with Numbers and Strings 3. Exploring Functions 4. Preprocessing and Compilation 5. Standard Library Containers, Algorithms, and Iterators 6. General-Purpose Utilities 7. Working with Files and Streams 8. Leveraging Threading and Concurrency 9. Robustness and Performance 10. Implementing Patterns and Idioms 11. Exploring Testing Frameworks 12. C++ 20 Core Features 13. Other Books You May Enjoy
14. Index

Using generic and template lambdas

In the preceding recipe, we saw how to write lambda expressions and use them with standard algorithms. In C++, lambdas are basically syntactic sugar for unnamed function objects, which are classes that implement the call operator. However, just like any other function, this can be implemented generically with templates. C++14 takes advantage of this and introduces generic lambdas that do not need to specify actual types for their parameters and use the auto specifier instead. Though not referred to by this name, generic lambdas are basically lambda templates. They are useful in cases where we want to use the same lambda but with different types of parameters. Moreover, the C++20 standard takes this a step further and supports explicitly defining template lambdas. This helps with some scenarios where generic lambdas are cumbersome.

Getting started

It is recommended that you read the preceding recipe, Using lambdas with standard algorithms...

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