I've recently been working in Clojure on some code that really benefits from parallelization but doesn't need to squeeze the last available cycle out of the machine.
Of course, if you're using Clojure, you're also using Leiningen as the universal build and configuration system. Accept no substitute. Now if I could only remember the syntax to run a single test when I'm refactoring some code and need to reflect the changes in the test suite via the build system and not just from inside the REPL?
Ah, here it is:
This is of course self-explanatory if one's brain is running in clojure mode and not only the editor.