difference

Obtain values not present in another sorted array.

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

function difference(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.difference(x, y);
// → [ 10, 20, 40, 40 ]

References

• Data.List.\ : Haskell
• Data.Set.difference() : Haskell
• Set.difference() : Python
• _.difference() : Lodash
• _.differenceBy() : Lodash
• _.differenceWith() : Lodash
• Array.remove() : Sugar.js