Control.Arrow.StateListArrow

Description

Implementation of list arrows with a state

Synopsis

Documentation

newtype SLA s a b Source

list arrow combined with a state

Constructors

SLA
Fields runSLA :: s -> a -> (s, [b])

Instances

fromSLA :: ArrowList a => s -> SLA s b c -> a b cSource

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