Is Iterator Constructability a Big Question in the Design of New Library Facilities?

I typically only write the operations that I am going that I know I want to use in my code yep. Default constructability whether or not your thing can be default constructed is usually like this huge question for your type. Local reasoning is enabled by saying well I could see the values and I see how they're used so you don't have to worry about things like the semantics of the code plus where do all these guys live in memory? It's incredibly inconvenient it's a real problem for me yeahYeah Yeah Well You Know In A similar vein there's one of the things that we spend um uh a lot of time talking about when we're designing new library facilities, he says.