A colleague just pointed this cool tip out to me:
If you enter “
play help“, it says: “
~ <command> Executes the specified command whenever source files change.”
So what this does – and how it saves you time – is: it compiles when you save, so that by the time you hit reload in the browser, if you are lucky, it will have already compiled.
This saves me a few seconds each time I switch to the browser to check out my most recent changes.