Making a single C file out of a Nim program.

The Nim programming language recently hit the 1.0.0 milestone and I decided to pick it up. Since Manning’s Nim in Action came back in 2017, it naturally targets an older version of Nim. Fortunately, there haven’t been big user-visible changes to Nim over these two years so it’s still possible to use this book to learn. That said, as is inevitable with a new language that’s still under development, some things have changed.