(:title "Technotalk")

Don’t make objects that end with ‘er’.

 Some er’s that I’ve learned to avoid over the years:

• Managers - Every time I see one of these, I cringe. People will usually tell me what it does, long before they can tell me what it is. Is it a registry? Fine call it a registry. Is it a history or a log? Call it that. Is it a factory? Call it that.
• Controllers - Only good controller object I’ve made in the last 20 years was an interface to a BallastVoltageController that represented a real world object. The fact that every single MVC implementation in the world has had a different role for Controller ought to tell us something about how well that idea fit.
• Organizer (and many like them) - Focus is on what it does. This is a great example of how easy it is to turn many of these ‘ers’ into nouns. Call it an Organization. Now we’re focusing on what it is.
  Analyzer/Renderer/etc - Definitely examples of “worker” objects. What if they had been Analysis/Rendering/etc.
• Builder/Loader/Reader/Writer/etc - Remove the focus from the objects being manipulated, and tend assume to much responsibility themselves.