 | hxt-8.1.0: A collection of tools for processing XML with Haskell. | Source code | Contents | Index |
| Control.Arrow.StateListArrow |
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Version : $Id: StateListArrow.hs,v 1.7 20050902 17:09:39 hxml Exp $
Implementation of list arrows with a state
newtype SLA s a b = SLA {
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| fromSLA :: ArrowList a => s -> SLA s b c -> a b c |
| newtype SLA s a b | Source |
| list arrow combined with a state | ||||||
| Constructors | ||||||
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 Instances | ||||||
| fromSLA :: ArrowList a => s -> SLA s b c -> a b c | Source |
conversion of state list arrows into arbitray other list arrows.
allows running a state list arrow within another arrow:
example:
... >>> fromSLA 0 (... setState ... getState ... ) >>> ...
runs a state arrow with initial state 0 (e..g. an Int) within another arrow sequence