I was reading Eleara examples out of Hackage, and I kept noticing lines like this:
> t <- get GLFW.time
> GLFW.time $= 0
Most of the rest of it made more-or-less sense (I mean, there IS a reason I'm still asking questions to beginners!) but I couldn't seem to find anything about it on my usual reference sources, and it's uses don't make that much sense to me.