Cling was the first interactive environment for C++. While it is an amazing piece of technology, it has several notable deficiencies, e.g. the loss of all previous work when a segfault occurs. In this talk, I discuss how modules can be used to perform incremental compilation in a fashion similar to what is available in Cling. The basic concept is that each cell of a notebook exports itself as a module which the following cell imports, forming a computational chain. The talk will consist of a demo on a notebook that is run from a Docker image. Interested participants will be able to download this image and experiment with the notebook.
