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Re: [Haskell-cafe] Hierachical abstraction

Subject: Re: [Haskell-cafe] Hierachical abstraction
From: Nils Anders Danielsson
Date: Fri, 29 Jan 2010 00:58:57 +0000
On 2010-01-28 20:31, Luke Palmer wrote:
I could be mistaken, but at least there are both Applicative and Arrow
parser libraries. I don't know how to classify the language that they
parse -- it is not strictly context-free. It corresponds roughly to
context-free where certain types of infinite chains are allowed.
If the token set is finite you don't get any expressive advantage from a
monadic parser combinator library (in a lazy setting): you can parse any
decidable language using a simple library with an applicative functor

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