underwhelm.js

___.random(list)

Choose a random element from a list.

___.random([1, 2, 3, 4, 5]);
=> 3

___.random([1, 2, 3, 4, 5]);
=> 5

___.random([1, 2, 3, 4, 5]);
=> 1

___.coinflip()

Return either true or false.

___.coinflip();
=> true

___.coinflip();
=> false

___.coinflip();
=> false

___.maybeMap(list, transformation)

Produce a new array of values by taking each value in a list and (maybe) applying a transformation function.

___.maybeMap([1, 2, 3, 4, 5], function(value) {
  return value + 10;
});
=> [11, 2, 13, 14, 5]

___.maybeMap([1, 2, 3, 4, 5], function(value) {
  return value + 10;
});
=> [11, 12, 3, 4, 5]

___.maybeMap([1, 2, 3, 4, 5], function(value) {
  return value + 10;
});
=> [11, 2, 13, 4, 15]