From: James Edward Gray II <james@...>
Date: 2006-08-10T01:49:04+09:00
Subject: Re: how to see if a variable matches an array element?

On Aug 9, 2006, at 11:35 AM, John Fink wrote:

> Here's the relevant part of my script (note the rochambo function  
> is defined
> earlier in the script, and is really verbose, so I clipped it out):
>
> choices = %w{R P S}
> puts "Your choice? R,P,S"
> userchoice = gets.chomp.upcase
> computerchoice = choices[rand(choices.length)]
> puts "You picked " + userchoice + "!"
> puts "Computer picked " + computerchoice + "!"
> puts "FIGHT!"
> rochambo(userchoice, computerchoice)
>
>
> Basically I want to have the program die if the userchoice variable  
> doesn't
> equal one of the elements in the choices array, and it should be  
> easy, but I
> am hitting my head against a wall.

die "Please choose one of #{choice.join(',')}." unless  
choices.include? userchoice

Hope that helps.

James Edward Gray II