Follow the links below to see how to use a few of them.
| delete | removes a key-value pair from a hash; you can delete an individual element of a hash or a hash slice. |
| each | returns a two-element list that contains a (key, value) pair from a hash or a (index, value) pair from an array |
| exists | it checks whether a particular hash/array element or a subroutine exists |
| keys | use this function to get the indices of an array or the keys of a hash |
| values | use this function to get the values of an array or a hash |