intersection

Obtain values present in both sorted arrays.

Similar: [union], intersection, [difference], [symmetricDifference].

function intersection(x, y, fc, fm)
// x:  a sorted array
// y:  another sorted array
// fc: compare function (a, b)
// fm: map function (v, i, x)

const xsortedArray = require('extra-sorted-array');

var x = [10, 20, 20, 40, 40, 80];
var y = [20, 50, 80];
xsortedArray.intersection(x, y);
// → [ 20, 80 ]

References

• Data.Set.intersection() : Haskell
• Set.intersection() : Python
• _.intersection() : Lodash
• _.intersectionBy() : Lodash
• _.intersectionWith() : Lodash
• Array.intersect() : Sugar.js