filterAt - nodef/extra-entries GitHub Wiki

Keep entries with given keys.

Similar: map, reduce, filter, filterAt, reject, rejectAt.

function filterAt(x, ks)
// x:  entries
// ks: keys
const entries = require('extra-entries');

var x = ["a", 1], ["b", 2], ["c", 3], ["d", 4], ["e", 5](/nodef/extra-entries/wiki/"a",-1],-["b",-2],-["c",-3],-["d",-4],-["e",-5);
[...entries.filterAt(x, ["a", "c", "e"])];
// → [ [ "a", 1 ], [ "c", 3 ], [ "e", 5 ] ]

[...entries.filterAt(x, ["b", "d"])];
// → [ [ "b", 2 ], [ "d", 4 ] ]

References