NAME

outer - generalized outer product

SYNOPSIS

arr1.outer(op, arr2)

DESCRIPTION

The outer() method computes the generalized outer product of arr1 and arr2 using the operator or function op. The resulting array has a shape that is the concatenation of the shapes of arr1 and arr2.

This is similar to APL arr₀ ∘. op arr₁.

For each element i in arr1 and j in arr2, the result contains the result of applying op(i, j).

RETURN VALUE

An array containing the results of applying op to all combinations of elements from the input arrays.

ERRORS

ArgCheck if the number of arguments is not 3.
TypeCheck if op is not an operator or procedure.

EXAMPLE

    a = [2, 3]
    b = [3, 4, 5]
    a.outer(`*, b)
6  8 10
9 12 15

SEE ALSO

inner