@extra-lists/subset

Picks an arbitrary submap. :package: :smiley_cat: :running: :vhs: :moon: :scroll: :newspaper: :blue_book:

Usage no npm install needed!

<script type="module">
  import extraListsSubset from 'https://cdn.skypack.dev/@extra-lists/subset';
</script>

README

Picks an arbitrary submap. :package: :smiley_cat: :running: :vhs: :moon: :scroll: :newspaper: :blue_book:

Similar: subset, subsets, isSubset.

This is part of package extra-lists.


lists.subset(x, [n], [r]);
// x: lists
// n: number of entries (-1 => any)
// r: random seed 0->1

const lists = require('extra-lists');

var x = [['a', 'b', 'c', 'd'], [1, 2, 3, 4]];
lists.subset(x).map(c => [...c]);
// [ [ 'b', 'c' ], [ 2, 3 ] ]

lists.subset(x, 3, 0.3).map(c => [...c]);
// [ [ 'a', 'b', 'd' ], [ 1, 2, 4 ] ]

lists.subset(x, 2, 0.3).map(c => [...c]);
// [ [ 'b', 'd' ], [ 2, 4 ] ]


References