CppCon 2019

Functions have long been a mainstay of C++ flow of control. But there are several other entities which the language considers callable/invokable.

After a brief review of the salient properties of (a) function types (including the "abominable" ones!) and (b) the call operator, this talk will focus on the other entities to which the operator may be applied: pointers and references to functions and member functions, function objects, lambdas, and callbacks. We will pay special attention to the evolution of C++ lambdas, from their limited capabilities in C++11 through their various enhancements in C++14/17/20.

Along the way, we will also explore some of the standard library components that can be useful tools when programming with C++ callables.