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:
Working with the Standard Template Library (STL) is much more comfortable and powerful thanks to the ranges library. The algorithms of the ranges library are lazy, can work directly on the container, and can quickly 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.
In my last post, “Define Concepts“, I defined the concepts Integral, SignedIntegral, and UnsigendIntegral using logical combinations of existing concepts and compile-time predicates. Today, I use Requires Expressions to define concepts.
Why do the biggest and most profitable trading firms use C++? In this webinar we will address this question and present one of the most anticipated features of C++20 standard: Ranges.
There are two ways to define a concept: You can combine existing concepts and compile-time predicates, or you can apply a requires expression in four different ways.
Type erasure based on templates is a pretty sophisticated technique. It bridges dynamic polymorphism (object orientation) with static polymorphism (templates).
The registration for my mentoring program, “Fundamentals for C++ Professionals”, is still open until 17th April. The program starts on 22nd April.