xswithFilterpmapf
xswithFilterpmapf is a functional programming utility described as a composite operation that filters a sequence and then maps the result, typically with parallelism for the mapping step. It is conceived as a single, higher-order operation that combines two common data transformations: filtering and mapping.
In a typical interpretation, xswithFilterpmapf takes a collection xs, a predicate p, and a function f, and
The operation preserves the order of elements that pass the predicate, unless the underlying parallel map reorders
xswithFilterpmapf is useful when you need to discard unwanted items early and apply a transformation to the