You run your code before running tests? IMO that's bad practice.

1 second, seriously? Even the Linux kernel is based on C, and it doesn't even have compilation times approaching that.

I guess I also work on a lot of big data projects, where getting results will take... 48 hours or so, so anything shorter than that is basically some sort of unit test or dry run... so in that context, compilation times do not even register on the things slowing me down.