randomKey - nodef/extra-lists GitHub Wiki

Pick an arbitrary key.

Similar: randomKey, keys, has.

function randomKey(x, fr)
// x:  lists
// fr: random number generator ([0, 1))

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

var x = ['a', 'b', 'c'], [1, 2, 3](/nodef/extra-lists/wiki/'a',-'b',-'c'],-[1,-2,-3);
xlists.randomKey(x);
// → 'c'

xlists.randomKey(x);
// → 'b'

References