@extra-lists/submap v2.1.0

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

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

lists.submap(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.submap(x).map(c => [...c]);
// [ [ 'b', 'c' ], [ 2, 3 ] ]

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

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

references

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