[togakangaroo]

Fantastic, now what if your domain model actually requires an underscore in things? Or more realistically umm ... ooh ... I dunno, how about I want to write some infrastructure, that iterates over objects? Surely, that's not a thing we use literally all the time. But hey, just write the code to filter out underscores.

Oh wait, now I'm passing my object to a third party library that preforms infrastructure? I guess they better provide a hook that I can inject my own naming conventions.

Yes, underscore fields work, until they don't. Is a function that returns an object really that hard for beginners? I can answer that as I actually teach beginners - yes, it's hard for like two class sessions, after the third homework assignment they have no other issues. So yeah, closures are the way to solve this.

I wouldn't use what this article proposes unless I definitely needed classes, but for the 1% of the time that I do this is a pretty nifty solution to one of my biggest gripes.