Function from a string?

Hi.
Im making a RPG game, like Final Fantasy / Zelda type.

A players attacktypes is in an array:
like :

attacks = [melee,ice,fire]

Then when a for loop and some programming the player can choose witch skill to use.

Any good idea on how to tell what function to run?

Like:

  1. attack[0] is choosen.
  2. the attack function is called . How?