24 Mar
2015
24 Mar
'15
5:11 a.m.
John Wiegley <johnw@newartisans.com> writes:
Arrows abstract functions, allowing you to have constructions like Kleisli, which are Arrows, but compose in the presence of effects using (<=<) rather than (.).
That is, you compose them using (<<<) as you would using any other Arrow, but the Arrow instance is using a different form of composition under the hood. John