Criticism
The concept of design patterns has been criticized in several ways.
The design patterns may just be a sign of some missing features of a given programming language (Java or C++ for instance). Peter Norvig demonstrates that 16 out of the 23 patterns in the Design Patterns book (that is primarily focused on C++) are simplified or eliminated (via direct language support) in Lisp or Dylan. See also Paul Graham's essay "Revenge of the Nerds".
Moreover, inappropriate use of patterns may unnecessarily increase complexity.
Read more about this topic: Software Design Pattern
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