randomSubset

Pick an arbitrary subset.

Similar: subsets, hasSubset, randomSubset.

function randomSubset(x, n, fr)
// x:  an object
// n:  number of entries [-1 ⇒ any]
// fr: random number generator ([0, 1))

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

var x = {a: 1, b: 2, c: 3, d: 4};
object.subset(x);
// → { a: 1 }

object.subset(x, 3);
// → { a: 1, b: 2, d: 4 }

object.subset(x, 2);
// → { b: 2, d: 4 }

References

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