Find online (perferably in github) some interesting C++ code using some of the types discussed in these chapters in an interesting way. Post a 5-10 line code snippet (plus a github link to the code snippet in the repository -- you can look up online how to produce a URL referring to part of code in a particular version), and discuss what the code does and why the use of types is interesting. Is the code easy to read? Did you find it easy to figure out what it did? What made it hard or easy?