Summary

Here's a brief summary of all the concepts discussed in this chapter!

In this chapter you’ve seen how if constexpr can make code much clearer and more expressive. Before C++17 you could use enable_if techniques (SFINAE) or tag dispatching. Those options usually generated complicated code which might be hard to read by novice and non-meta-programming experts. if constexpr lowers the expertise level needed to write template code effectively.

In the next chapter, we will learn to parallelize CSV Reader.

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Introduction

Removed or Fixed Language Features

Removed And Deprecated Library Features

Language Clarification

Templates

General Language Features

Standard Attributes

std::optional

std::variant

std::any

std::string_view

Searchers and String Matching

String Conversions

Filesystem

Parallel STL Algorithms

Other Changes in the Library

Refactoring with std::optional and std::variant

Enforcing Code Contracts With [[nodiscard]]

Replacing enable_if with if constexpr - Factory with Variable Arguments

How to Parallelise CSV Reader

Summary