Thanks to C++23, constructing containers will become more convenient. Additionally, the ranges library got more new views.

This Sunday, the poll for my next mentoring program ended. There is a unique winner: Design Patterns and Architectural Patterns with C++.

There are more reasons to prefer ranges library above the classical Standard Template Library. The ranges iterators support unified lookup rules and provide additional safety guarantees.

The ranges library in C++20 supports sentinels. Sentinels stand for the end of a range and can be regarded as generalized end iterators.

I will start my next mentoring program in 2023, right after the ending of the current mentoring program, "Fundamentals for C++ Professionals". Now, you have to decide which mentoring program I should implement next.

The algorithms of the ranges library are lazy, can work directly on the container, and can easily be composed. But they have more to offer: projections. A projection is a mapping of a set into a subset. Let me show you in this post what that means:

Thanks to the ranges library, working with the Standard Template Library (STL) is much more comfortable and powerful. The algorithms of the ranges library are lazy, can work directly on the container, and can easily be composed. But there is more to it:

Concepts are a powerful and elegant tool to check at compile time if a type fulfills. Thanks to static_assert, you can use concepts as a standalone feature: static_assert(Concept<T>).

static_assert allows you to check at compile time if a type T fulfills the Concept: static_assert(Concept<T>).

In my last post "Defining Concepts with Requires Expressions", I exemplified how you can use requires expressions to define concepts. Requires expressions can also be used as a standalone feature when a compile-time predicate is required.