Struct to Hash:

class Struct
  def to_hash
    Hash[*members.zip(values).flatten]
  end
end

Hash to Struct:

class Hash
  def to_struct(name)
    Struct.new(name, *keys).new(*values)
  end
end

CRC can be used to convert a string into a number:

require 'zlib'
integer = Zlib.crc32('snippet')
=> 2518453461
Zlib.crc32('cat')
=> 2656977832

The CRC algorithm is normally used to detect changes or errors in large chunks of data.