filterAt

Keeps values at given indices only. 📦 😺 🏃 📼 🌔 📜 📰 📘

Alternatives: filter, filter$, filterAt.
Similar: map, filter, reject, reduce, accumulate.

array.filterAt(x, is);
// x:  an array (updated)
// is: indices (sorted)
// → x

const array = require("extra-array");

var x = [2, 4, 6, 8];
array.filterAt(x, [1, 2]);
// [ 4, 6 ]

array.filterAt(x, [1, 3]);
// [ 4, 8 ]

References

• iterableList.get: Java