> is an arrow that takes a pair of values and combines them to return a single value:</p
><preclass="sourceCode haskell"
><code
><spanclass="Function FunctionDefinition"
>unsplit ::</span
><spanclass="Normal NormalText"
> (Arrow a) => (b -> c -> d) -> a (b, c) d</span
><br
/><spanclass="Normal NormalText"
>unsplit = arr . </span
><spanclass="Function"
>uncurry</span
><spanclass="Normal NormalText"
> </span
><br
/><spanclass="Normal NormalText"
> </span
><spanclass="Comment"
>-- arr (\op (x,y) -> x `op` y) </span
><br
/></code
></pre
><p
><code
>(***)</code
> 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).</p