# File lib/merb-cache/core_ext/hash.rb, line 5 def to_sha2 string = "" keys.sort_by{|k| k.to_s}.each do |k| case self[k] when Array string << self[k].join when Hash string << self[k].to_sha2 else string << self[k].to_s end end Digest::SHA2.hexdigest(string) end