splice

Remove or replaces existing values.

function splice(x, i, n, ...vs)
// x:  an iterable
// i:  remove index [0]
// n:  number of values to remove [rest]
// vs: values to insert

const xiterable = require('extra-iterable');

var x = [1, 2, 3, 4, 5];
[...xiterable.splice(x, 2)];
// → [1, 2]

[...xiterable.splice(x, 2, 2)];
// → [1, 2, 5]

[...xiterable.splice(x, 2, 2, 30, 40)];
// → [1, 2, 30, 40, 5]

References

• Array.prototype.splice: MDN web docs
• immutable-prototype: @azu