Design Patterns
LePUS3 was specifically designed to model, among others, the 'Gang of Four' design patterns, including abstract factory, factory method, adapter, decorator, composite, proxy, iterator, state, strategy, template method, and visitor. (See "The 'Gang of Four' Companion") The abbreviation LePUS for "Language for Pattern Uniform Specification" is used because the precursor of this language was primarily concerned with design patterns. The implementation of design patterns specified in LePUS3 can be automatically verified by the TTP Toolkit.
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