CppCast Episode 204: Functional Programming in C++ with Ivan Čukić

by Rob Irving and Jason Turner

Ivan Čukić is the author of "Functional Programming in C++" published by Manning.

He is one of the core developers of KDE, the largest free/libre open source C++ project.

He is also teaching modern C++ techniques and functional programming at the Faculty of Mathematics in Belgrade and has been using C++ for more than 20 years. He has been researching functional programming in C++ before and during his PhD studies, and uses the techniques in real-world projects.

The Power of Hidden Friends in C++

by Anthony Williams

"Friendship" in C++ is commonly thought of as a means of allowing non-member functions and other classes to access the private data of a class. This might be done to allow symmetric conversions on non-member comparison operators, or allow a factory class exclusive access to the constructor of a class, or any number of things.

However, this is not the only use of friendship in C++, as there is an additional property to declaring a function or function template a friend: the friend function is now available to be found via Argument-Dependent Lookup (ADL). This is what makes operator overloading work with classes in different namespaces...

C++ Core Guidelines: Iostreams

by Rainer Grimm

When you interact with the outside world, the iostream library is the way to go in C++. As always you have to keep a few rules in mind. Let me show, which rules...

“The STL From Scratch” is back!

by Arthur O’Dwyer

Registrations for CppCon 2019 are open, and so are registrations for my two-day pre-conference class, “The STL from Scratch.”...

C++ 2019 - The state of Developer Ecosystem in 2019 Infographic

by Jet Brains

People continue to adopt the new C++ standards. The usage of C++17 has grown by 10 percentage points since last year...

Pragmatic compiling of C++ to WebAssembly. A Guide.

by Thomas Deniffel

Most C++-Programmers I know of have already heard of WebAssembly, but most have had troubles getting started. This guide brings you beyond of a simple “Hello World”: To a stateful-applications with interactions between C++ and JavaScript...

Space Game: A std::variant-Based State Machine by Example

by Nikolai Wuttke

One of a powerful uses of std::variant is to implement State Machines. Some time ago I showed a simple example, but today we have something bigger. In today’s article by Nikolai Wuttke you’ll see how to leverage std::variant and build a space game!

In case you missed it: SFINAE and enable_if

by Eli Bendersky

There's an interesting issue one has to consider when mixing function overloading with templates in C++. The problem with templates is that they are usually overly inclusive, and when mixed with overloading, the result may be surprising...

C++ Core Guidelines: Rules for Strings

by Rainer Grimm

The C++ core guidelines use the term string as a sequence of characters. Consequently, the guidelines are about  C-strings, C++-strings, the C++17 std::string_view's, and std::byte's...

A simple workaround for the fact that std::equal takes its predicate by value

by Raymond Chen

The versions of the std::equal function that takes a binary predicate accepts the predicate by value, which means that if you are using a functor, it will be copied, which may be unnecessary or unwanted.

In my case, the functor had a lot of state, and I didn’t want to copy it....