===========================
Generate Unique Identifiers
===========================

$Id$

  >>> from cybertools.util.uid import generateUid

  >>> generateUid(seed=42)
  '5MdsLTYmogAeWfbrLDBY8l'

  >>> generateUid(seed=42)
  '5MdsLTYmogAeWfbrLDBY8l'

  >>> def checkIt(id):
  ...     return id != '5MdsLTYmogAeWfbrLDBY8l'

  >>> generateUid(check=checkIt, seed=42)
  '15pahuNd5rxoekvZSMGAl1'

  >>> generateUid(lowerCaseOnly=True, seed=42)
  'b8lhps8li07acdu7i0w01b0rh'

  >>> generateUid()
  '...'