From: dblack@...
Date: 2006-08-10T01:43:33+09:00
Subject: Re: how to see if a variable matches an array element?

Hi --

On Thu, 10 Aug 2006, John Fink wrote:

> Hey folks,
>
> I'm knocking together a Rock, Paper, Scissors Ruby script to teach myself
> more Ruby deliciousness, and I've got it working, except I want to compare a
> variable to an array element (one of ["R", "P", "S"]) and have the program
> die if it doesn't match up.
>
> 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

raise unless choices.include?(userchoice)  # or something like that


David

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