shift$

Remove first value!

Alternatives: shift, shift$.
Similar: push, pop, shift, unshift.

function shift$(x)
// x: an array (updated!)

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

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

x;
// → [ 2, 3 ]

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

References

• Array.shift() : MDN Web Docs