将多维度数组中的String转换为Integer

YAML::dump(result)

result

responseHeader: 
  status: 0
  QTime: 1
  params: 
    wt: ruby
    q: enid:(15542697739)
response: 
  numFound: 1
  start: 0
  docs: 
  - enid: \"15542697739\"

if result[\"response\"][\"docs\"][\"enid\"].to_i == num[\'1\'][\'car\']

num[\'1\'][\'car\']

can\'t convert String into Integer
(TypeError)

result[\"response\"][\"docs\"][\"enid\"].to_i

Integer(result[\"response\"][\"docs\"][\"enid\"])

enid