Nested Loop in Ruby, Hash and Array

Question

How can i do this in Ruby

 var pCodePrice = { 'GR1': 3.11, 'SR1': 5, 'CF1': 11.23 }; var basket = ['GR1', 'SR1', 'GR1', 'GR1', 'CF1']; var total = []; for (i = 0, x = basket.length; i < x; i++) { for (var prop in pCodePrice) { if (basket[i] == prop) { total.push(pCodePrice[prop]) } } } 

This loops through the array and checks to see if the item matches the key of the hash in the inner loop, if so it pushes the value into a new array.

I just cant get it in Ruby,

Thanks

Answer 1

It's pretty simple in ruby using map.

pCodePrice = { 'GR1' => 3.11, 'SR1' => 5, 'CF1' => 11.23 }
 => {"GR1"=>3.11, "SR1"=>5, "CF1"=>11.23} 
basket = ['GR1','SR1','GR1','GR1','CF1']
 => ["GR1", "SR1", "GR1", "GR1", "CF1"] 
total = basket.map { |code| pCodePrice[code] }
 => [3.11, 5, 3.11, 3.11, 11.23]