Tony Morris

"If you were programming with functions your program wouldn't do anything." -- @djspiewak Isn't that early Haskell? #LambdaJam

@casio_juarez @djspiewak that is just wrong. You can program with only functions now in Haskell and it does things! Amazing.

@puffnfresh @casio_juarez Your functions aren't pure though if it's doing something. My assertion is a form of the old "box is getting warm"

@djspiewak @casio_juarez no, my functions are pure. Yes, Haskell still performs effects.

@puffnfresh @casio_juarez Without impurity, you have no input, no output, and no evaluation.

@djspiewak @casio_juarez no, that's just wrong. IO is pure. There's no pretending.

@puffnfresh @casio_juarez Side effects are impure by definition. Your function has a result outside of it's return value.