On Wednesday, March 21, 2018 at 5:37:48 AM UTC+5:30, Paul Rubin wrote: > Ben Finney writes: > > Any program which needs to interact with systems outside itself – which > > is to say, any program which performs useful work, ultimately – must > > have side effects. So it's absurd to advocate removing *all* side > > effects. > > The way it (conceptually) works in Haskell is you write a purely > functional program that returns a pure value of type "I/O action".
Saw this coincidentally adjacent to this thread https://youtu.be/ROor6_NGIWU Its a view 'from the other side': a big name in functional programming (not haskell) musing on how the world of IO, more generally world interaction, could be cleaned up -- https://mail.python.org/mailman/listinfo/python-list
