[Haskell-cafe] Smarter do notation

Ivan Lazar Miljenovic ivan.miljenovic at gmail.com
Sun Sep 4 06:24:58 CEST 2011

On 4 September 2011 12:34, Daniel Peebles <pumpkingod at gmail.com> wrote:
> Hi all,
> For example, if I write in a do block:
> x <- action1
> y <- action2
> z <- action3
> return (f x y z)
> that doesn't require any of the context-sensitivty that Monads give you, and
> could be processed a lot more efficiently by a clever Applicative instance
> (a parser, for instance).

What advantage is there in using Applicative rather than Monad for
this?  Does it _really_ lead to an efficiency increase?

Ivan Lazar Miljenovic
Ivan.Miljenovic at gmail.com

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