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  • haskell - A monad is just a monoid in the category of endofunctors . . .
    It's quite possible that Iry had read From Monoids to Monads, a post in which Dan Piponi (sigfpe) derives monads from monoids in Haskell, with much discussion of category theory and explicit mention of "the category of endofunctors on Hask "
  • What is a monad for someone who doesnt want to learn Haskell in order . . .
    The thing is, most programming languages don't have a sufficiently powerful type system to really express the idea of monads, namely, they don't support higher-kinded polymorphism So, for explaining monads, a quick intro to Haskell syntax is the easiest way The alternative is to introduce it without any programming language at all, using only math syntax – but that doesn't make it easier
  • Why monads? How does it resolve side-effects? - Stack Overflow
    Some Monads don't seem to be of that nature, however Monads such as the IO Monad or the ST monad literally perform side-effecting actions There are many ways to think about this, but one way that I think about it is that just because my computations must exist in a world without side-effects, the Monad may not





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