New way to program?

REPL (Read-Eval-Print-Loop) in C++: hands-on session

by Pascal Thomet

From the article:

A Read-Eval-Print-Loop (REPL) enables to leverage very rapid and robust application development, prototyping and testing. This kind of development environment originates from the early days of functional programming (Lisp machines and the like), and is common in functional and scripting languages.

As a compiled language, C++ was out of the loop for a long time...