What is your "favorite" design pattern

[lefticus]

Yes, I know this is a ridiculous question.

However, I'm trying to prioritize the design patterns for issue #29

[jcsahnwaldt]

Composite

[trcwm]

PubSub, read-write lock.

[lefticus]

Comments from Twitter:

Out of GoF i recall Flyweight, itetator and Bridge. Though suppose nobody loves Bridge.

From non-GoF I liked CoW, also pimpl/envelope deserbes attention

PubSub, Visitor, read-write lock. But I’m mostly interested in patterns I am less familiar with.

Visitor

Missing my favourite: interpreter. Such a wildly misunderstood set of patterns all hiding in the same name.

[oschonrock]

Strategy ?

[gracicot]

I find Factory to be one of the most useful. You take a string, a int or an enum and you return an instance of a type. I use it with variant (factory can be non polymorphic and exhaustive right?) and quite useful to parse some data and output different types.

[bernd5]

Visitor pattern for ASTs or similar

[villevoutilainen]

Strategy, Template Method, and Bridge seem like unfortunate omissions, to me. The combination of the first two brings forth aspect-oriented programming. The latter, despite someone doubting it on twitter, is massively useful for ABI insulation.

[villevoutilainen]

Disclaimer: I have just used these patterns in practical industry projects, I'm not talking purely theoretically. :)

[lefticus]

Main problem is just how many github let me put in the poll. But I think I figured out how to add more, so I might rerun this

[villevoutilainen]

Oh, and for heaven's sake, the list is missing State.