将一个 hash 值映射到另一个 hash ruby

Question

I have a hash which gives me the data in following manner:

details = [{"severity_longevity" => "Medium", "operating_leverage" => "High",
        "financial_leverage"=> "Low", "revenue_growth"=> "Low"}]

I have one hash which gives me the score that I am supposed to assign.

score = [{"Low"=> 5},{"Medium"=> 10}, {"High"=> 15}]

How can I change the "Medium" "Low" and "High" in details hash with their number scores from score hash?

Answer 1

For Hashes you can use transform_values method

details = {
  "severity_longevity" => "Medium", 
  "operating_leverage" => "High",
  "financial_leverage"=> "Low", 
  "revenue_growth"=> "Low"
}
score = {"Low" => 5, "Medium" => 10, "High" => 15}

updated = details.transform_values { |v| score[v] }
# => { "severity_longevity" => 10, ... }