DRYing up Rock Paper Scissors

Question

I\'m a novice ruby programmer and although this code works, I\'m wondering how I can improve it. I have very limited knowledge on lambdas and procs and the like, but any advice

Answer 1

You can build a hash that contains the pick and which option lose against that pick:

hash = {'scissors' => 'paper', 'rock' => 'scissors', 'paper' => 'rock'}

Then you check if the machine pick is the same like you did:

roll_ops = ["rock", "paper", "scissors"]
pick = roll_ops.sample
if roll == pick

And the win/lose condition becomes something like this:

if hash[roll] == pick
  "win"
else
  "lose"
end

Nice and clean with just 2 conditions.