I didn't realize that was a dedicated calculator application for a few paragraphs. I thought it was just an interactive interpreter for some languages. These

I didn't realize that was a dedicated calculator application for a few paragraphs. I thought it was just an interactive interpreter for some languages. These days I use irb (Ruby) or ghci (Haskell) for all my calculating needs. For me, defining functions and being able to map and fold are very important.