arrays - Ruby "gets" prompts user for input. How do I get input (string) to reference existing object? -


i'm prompting user gets give me either peg1, peg2, or peg3, each reference array made before prompt. however, input user string, "peg1", "peg2", or "peg3". how make user's input reference/attach 3 arrays made?

if assign possible arrays hash keyed name of array, can ask user name , select array hash. using technique, don;t need hardcode values long case statement or (even worse) eval anything.

def ask_for_peg(pegs)   peg = nil   while peg.nil?     print("which peg want? ")     id = gets.strip     peg = pegs[id]   end   peg end  available_pegs = {   "peg1" => array_for_peg1,   "peg2" => array_for_peg2,   "peg3" => array_for_peg3 }  selected_peg = ask_for_peg(available_pegs) # results in 1 of arrays assigned in available_pegs array above

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