gistfile1.txt

require 'fastercsv' # Gem I'm assuming is beign used, but there are others.

hash = {} # So apeiros_ doesn't murder me

FasterCSV.foreach("path/to/file.csv") do |line|
  hash[line[0].to_sym] = { :location => line[1], :device_type => line[3] }
end

# then you can reference with

hash[:frog][:location]

# and

hash[:frog][:device_type]