# VectorFunctions2(A, B)ΒΆ

This package provides operations which all take as arguments vectors of elements of some type `A`

and functions from `A`

to another of type `B`

. The operations all iterate over their vector argument and either return a value of type `B`

or a vector over `B`

.

- map: (A -> B, Vector A) -> Vector B
`map(f, v)`

applies the function`f`

to every element of the vector`v`

producing a new vector containing the values.

- map: (A -> Union(B, failed), Vector A) -> Union(Vector B, failed)
`map(f, v)`

applies the function`f`

to every element of the vector`v`

producing a new vector containing the values or`"failed"`

.

- reduce: ((A, B) -> B, Vector A, B) -> B
`reduce(func, vec, ident)`

combines the elements in`vec`

using the binary function`func`

. Argument ident is returned if`vec`

is empty.