1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
|
lhs test
========
`unsplit` is an arrow that takes a pair of values and combines them to return
a single value:
~~~~ {.sourceCode .literate .haskell}
unsplit :: (Arrow a) => (b -> c -> d) -> a (b, c) d
unsplit = arr . uncurry
-- arr (\op (x,y) -> x `op` y)
~~~~
`(***)` combines two arrows into a new arrow by running the two arrows on a
pair of values (one arrow on the first item of the pair and one arrow on the
second item of the pair).
f *** g = first f >>> second g
Block quote:
> foo bar
|
