ap is:exact

In many situations, the liftM operations can be replaced by uses of ap, which promotes function application.

return f `ap` x1 `ap` ... `ap` xn

is equivalent to

liftM<n> f x1 x2 ... xn

Examples

>>> pure (\x y z -> x + y * z) `ap` Just 1 `ap` Just 5 `ap` Just 10
Just 51

In many situations, the liftM operations can be replaced by uses of ap, which promotes function application.

return f `ap` x1 `ap` ... `ap` xn

is equivalent to

liftMn f x1 x2 ... xn

Finds the articulation points for a connected undirected graph, by using the low numbers criteria: a) The root node is an articulation point iff it has two or more children. b) An non-root node v is an articulation point iff there exists at least one child w of v such that lowNumber(w) >= dfsNumber(v).

Sequential application. Equivalent to Control.Applicative.<*>.

Like ap, but evaluating the function and its argument in parallel.

Recover the application operator <*> from matchOne.

Alphabetical synonym for <*>

An adjective phrase. Transitive (fond of Mary, interested in an account) or intransitive (correct, green, valid).

In many situations, the liftM operations can be replaced by uses of ap, which promotes function application.

return f `ap` x1 `ap` ... `ap` xn

is equivalent to

liftMn f x1 x2 ... xn