Kevlin Henney


Software Patterns, editor of 97 Things Every Programmer Should Know

Kevlin is an architecture, software design and patterns expert. He is one of Europe’s most popular keynote speakers.

Kevlin is an independent consultant and trainer based in the UK. His development interests are in patterns, programming, practice and process. He has been a columnist for various magazines and web sites, including Better Software, The Register, Application Development Advisor, Java Report and the C/C++ Users Journal. Kevlin is co-author of A Pattern Language for Distributed Computing and On Patterns and Pattern Languages, two volumes in the Pattern-Oriented Software Architecture series. He is also editor of the 97 Things Every Programmer Should Know site and book.

YOW! 2013 Melbourne

The SOLID Design Principles Deconstructed

The SOLID principles are often presented as being core to good code design practice. Each of S, O, L, I and D do not, however, necessarily mean what programmers expect they mean or are taught. By understanding this range of beliefs we can learn more about practices for objects, components and interfaces than just S, O, L, I and D.

This talk reviews the SOLID principles and reveals contradictions and different interpretations. It is through paradoxes and surprises we often gain insights. We will leave SOLID slightly more fluid, but having learnt from them more than expected.

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Pattern-Oriented Software Architecture

Patterns offer a successful way of exploring, reasoning about, describing and proposing design ideas. There are many valuable aspects of pattern-based thinking that are overlooked in the common perception of design patterns. The original vision of patterns embodies a notion of incremental, feedback-based design – something that may come as a revelation to anyone who had mentally pigeonholed patterns together with heavier-weight design approaches. They are also somewhat broader in application than just OO framework design – something that may come as a surprise to anyone who had restricted their view of patterns to the handful of initial patterns documented by the Gang-of-Four.