import string

def tolower(astr)
  return string.tr(astr,"ABCDEFGHIJKLMNOPQRSTUVWXYZ","abcdefghijklmnopqrstuvwxyz")
end  

def nospaces(astr)
 return string.tr(astr," ","")
end

var stringe = module('stringe')
stringe.tolower=tolower
stringe.nospaces=nospaces

return stringe