Migration from boost::any

Explore the migration from boost::any to the C++17 std::any feature. Understand key differences like emplace support and small buffer optimization. Learn practical uses for flexible, type-safe storage including message passing and property management, improving your modern C++ coding capabilities.

We'll cover the following...

- Examples of std::any
  - Parsing files
  - Message Passing
- - Properties

Boost Any was introduced around the year 2001 (Version 1.23.0). Interestingly, the author of the boost library - Kevlin Henney - is also the author of the proposal for std::any. So the two types are strongly connected, and the STL version is heavily based on the predecessor.

Here are the main changes:

Feature	Boost.Any

...

1.Introduction

2.Removed or Fixed Language Features

3.Removed And Deprecated Library Features

4.Language Clarification

5.Templates

6.General Language Features

7.Standard Attributes

8.std::optional

9.std::variant

10.std::any

11.std::string_view

12.Searchers and String Matching

13.String Conversions

14.Filesystem

15.Parallel STL Algorithms

16.Other Changes in the Library

17.Refactoring with std::optional and std::variant

18.Enforcing Code Contracts With [[nodiscard]]

19.Replacing enable_if with if constexpr - Factory with Variable Arguments

20.How to Parallelise CSV Reader

Migration from boost::any