concat$

Append values from arrays!

Alternatives: concat, concat$.
Similar: concat, join.

function concat$(x, ...ys)
// x:  an array (updated!)
// ys: arrays to append

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

var x = [1, 2];
var y = [3, 4];
xarray.concat$(x, y);
// → [ 1, 2, 3, 4 ]

x;
// → [ 1, 2, 3, 4 ]

var x = [1, 2];
xarray.concat$(x, y, y);
// → [ 1, 2, 3, 4, 3, 4 ]

References

• Array.concat() : MDN Web Docs
• _.concat() : Lodash
• Array.append() : Sugar.js