randomKey - nodef/extra-map GitHub Wiki

Pick an arbitrary key.

Similar: randomKey, keys, has.

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

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

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

map.randomKey(x);
// → 'b'

References