Custom type value printers for Cling

Cling is a pretty cool C++ interpreter built at CERN, which shortens typical C++ development workflows by giving users a REPL (Read-eval-print loop), which means that you can type your C++ code, press ENTER and see the result almost instantly. However, out of the box Cling does not print the contents of structs, classes etc. In this blog post, I explain how a custom value printer can be added at runtime to expose the encapsulated data.