Control.Arrow.StateListArrow

Implementation of list arrows with a state

Documentation

newtype SLA s a b

list arrow combined with a state

Constructors

SLA

Fields

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

Instances

ArrowState s (SLA s)

Category (SLA s)

ArrowZero (SLA s)

ArrowPlus (SLA s)

ArrowChoice (SLA s)

ArrowApply (SLA s)

Arrow (SLA s)

ArrowList (SLA s)

ArrowWNF (SLA s)

ArrowNF (SLA s)

ArrowIf (SLA s)

ArrowNavigatableTree (SLA s)

ArrowTree (SLA s)

ArrowDTD (SLA s)

ArrowXml (SLA s)

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

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