@extra-entries/submap.min v2.1.14

Gives an arbitrary submap. :running: :package: :ledger:

Similar: subobject, subobjects, isSubobject. This is part of package extra-entries.

This is browserified, minified version of @extra-entries/submap. It is exported as global variable entries_submap. CDN: unpkg, jsDelivr.

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

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

var x = [['a', 1], ['b', 2], ['c', 3], ['d', 4]];
[...entries.submap(x)];
// [ [ 'a', 1 ], [ 'd', 4 ] ]

[...entries.submap(x, 3, 0.3)];
// [ [ 'a', 1 ], [ 'b', 2 ], [ 'd', 4 ] ]

[...entries.submap(x, 2, 0.3)];
// [ [ 'b', 2 ], [ 'd', 4 ] ]

references

• shuffle: PHP
• shuffle-seed: @webcaetano
• shuffle-array: @pazguille
• Seeding the random number generator in Javascript