What is mixin?

[galvin]

I see this in blizzard code. Also see it in the xml, what does it do?

[SDPhantom]

It takes a given table and copies the contents into the frame's table. This started showing up in WoD code.

[p3lim]

Think of it as inheriting from a template.

[SDPhantom]

Kind of, only the "templates" are other Lua tables in which the entries are copied from.

[MunkDev]

The name comes from functions being "mixed in" with the widget's table. It's basically just dynamic inheritance from an independent source. If your frame is a meal you're preparing, then mixin functions/tables can be seen as spices. They exist independently from the meal itself, but can be added to your meal, in which case it'll be part of said meal.

[SDPhantom]

I think the OP would get it by now. All these analogies are making my head hurt.