design pattern

Design patterns are a concept from software architecture, in which similar tasks must be solved again and again (even if often with different programming languages).

Design patterns describe on high abstraction level in each case an approach for such a solution. The advantage of such "architecture modules" is that one can talk about it on very abstract level and without reference to a certain programming language. Many patterns, such as iterator, listener, singleton, adapter, are now so well known and standardized that their names are anchored as fixed terms in the vocabulary of all developers.