[Haskell-cafe] Explaining monads
lanny at cisco.com
Tue Aug 14 13:30:28 EDT 2007
A very good point. I even knew that implicitly but wasn't
thinking in those terms explicitly when writing up my first post
and it does make a difference in how you view things.
Jeff Polakow wrote:
> > Look! You are doing it again! :) Does that paragraph even
> > contain the word "Monad"? :)
> Sorry. Your first paragraph led me to believe you were writing about
> > I'm aware a monad is an abstraction and as such it doesn't *do*
> > anything. My point was along the lines that you don't need to
> > know that your working in a field to be able to learn that
> > 3/2 = 1.5
> I agree.
> I think one of the problem with understanding monads comes from people
> mistakenly believing monads force an order of evaluation. This is a
> shortcoming of general Haskell tutorials which fail to convey that the
> order of evaluation is determined by data dependencies. If new
> programmers know that monads have nothing to do with forcing the order
> of evaluation when they start learning about monads, then maybe they
> will be less confused as they sort out what monads are actually used for.
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Lanny Ripple <lanny at cisco.com>
ScmDB / Cisco Systems, Inc.
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