Write everything only once. Smalltalk in government First Name: Clement Last Name: NOE Type:Talk Abstract: A mainframe government application was rewritten in Smalltalk. The guiding principle was to write everything only once. The design patterns that were developed or extended for this purpose will be documented. Most of these could be used by other government divisions. This resulting application has more functionality, a fraction of the original code volume and is easy to maintain. Some metrics comparing different implementations (cobol generator, java) will be shown. Bio: 1972. Civil Engineer. KUL. 1973. International Business Machines (IBM). Introduced to Smalltalk in 1989. 1992. Object Technology International (OTI). VisualAge Smalltalk consultancy. 1995. ICT Consultant in Government. 2013. Retired. Slides: See PDF Video: https://www.youtube.com/watch?v=fn6L4KBcFWY