I've encountered a few implementations of state pattern in my programming experience, and done a few. I've seen them used in various scenarios (mostly UI and parsing). The trouble is that all of them under pressure of rapid development turned into hardly maintainable and understandable chunks of code. I'm considering refactoring one of these, but I'm having trouble finding good resources for this online. There are many simple examples of State Pattern online, but I need some more in depth resources.

So I'm looking for:

  • Examples of common pitfalls when implementing state pattern and how to avoid them,
  • Real world examples of state pattern done correctly (like in some open source project/framework)
  • Personal experiences with state pattern are also welcome

Thank you for your time

oop design-patterns state-pattern
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