shpider-0.0.1: Web automation library in Haskell.Source codeContentsIndex
Network.Shpider.Pairs
Description
This module provides a nice syntax for defining a list of pairs.
Synopsis
type PairsWriter a b = State [(a, b)]
(=:) :: forall a b. a -> b -> PairsWriter a b ()
pairs :: forall a b c. PairsWriter a b c -> [(a, b)]
Documentation
type PairsWriter a b = State [(a, b)]Source
The abstract type describing the monadic state of a list of pairs.
(=:) :: forall a b. a -> b -> PairsWriter a b ()Source

Make a list of pairs of pairs like 

    pairs $ do $ 3 =: ( " is my favourite number or " , 5 )
                 10 =: ( " pints have I drunk or was it " , 11 )
pairs :: forall a b c. PairsWriter a b c -> [(a, b)]Source
Take a monadic PairsWriter and return a list of pairs.
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