compare - nodef/extra-array GitHub Wiki

Compare two arrays (lexicographically).

Similar: compare, isEqual.

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

const xarray = require('extra-array');

var x = [1, 2];
var y = [1, 2, 3];
xarray.compare(x, y);
// → -1

var y = [1, 2];
xarray.compare(x, y);
// → 0

var y = [1, -2];
xarray.compare(x, y);
// → 1

xarray.compare(x, y, (a, b) => Math.abs(a) - Math.abs(b));
// → 0

xarray.compare(x, y, null, v => Math.abs(v));
// → 0

References