Qafoo GmbH - passion for software quality
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:Author: 		www-data
:Date:			Wed, 31 Oct 2018 10:07:55 +0100
:Copyright:		All rights reserved

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Object Oriented Design
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- Ducks Do Not Type

  I consider public methods not originating from an abstract class or
  interface a code smell – at least when following class based object
  orientation design principles. Let me explain why…

- Coding in Katas

  In almost any kind of sports you hone your skills by repeating a small piece
  of practice over and over again. Pretty much the same works for learning to
  play a musical instrument. The idea of Code Katas applies this simple, but
  for many aspects effective, method of exercise to the world of programming.

- Code Review Tool

  We, at Qafoo, do Code Reviews quite often together with our customers. This
  often focusses on dicussing metrics, browsing the associated code and
  discussing solutions for the issues found. We started using a bunch of shell
  scripts for that, like everyone else, but at some point we came up with a
  webinterface to do this in a more comfortable way. Now we want to share this
  tool with you.

- Abstract Classes vs. Interfaces

  Features of object oriented languages are often use from a purely technical
  perspective, without respect to their actual semantics. This is fine as long
  as it works for you, but might lead to problems in the long run. In this
  article I discuss the semantical differences between abstract classes and
  interfaces. I also outline why following the semantics of those language
  constructs can lead to better code.

- Object lifecycle control

  From time to time I trip over APIs, which do not allow me to control the
  object lifecycle of the used objects myself. Let me discuss why this is a
  bad thing…

- Howto write a Rule for PHPMD

  This blog post will give you a detailed introduction into the development of
  custom PHPMD rules. PHPMD is static code analysis tool that helps to improve
  the quality of PHP software projects. Therefore it processes the project's
  source code and searches for known error patterns, design flaws,
  overcomplicated expressions and unused/dead code. You would like to use like
  PHPMD to improve the quality of your project, but you are missing a features
  in the current release, then you should read this post. Because this blog
  post will give a detailed description how to write and configure PHPMD with
  own rules for.

- Struct classes in PHP

  PHP arrays are a wonderful tool and one of the reasons I like PHP. Their
  versatility makes it possible to easily set up proof of concepts (POC),
  either used as hash maps storing multiple keys, or as lists, stacks, trees
  or whatever you like. But once you are past the phase of the initial POC,
  the excessive usage of arrays and exactly their versatility has some
  drawbacks: If you see an array type hint or return documentation, you know
  nearly nothing about the data structure. Using arrays as key-value hash maps
  for storing configuration keys or data sets you also know nearly nothing
  about the expected contents of the array.

- Why software quality matters

  It is not always obvious why software quality matters in any development
  project. Especially in the PHP area, where projects are often won by
  pitching with short development time and low cost, people don't see the
  benefits of quality assurance action for their projects. We have therefore
  made up a white paper explaining the benefits of software quality for your
  company and how quality assurance can influence important business goals of
  development projects.