looking for an old conversation on Clean

I believe there was a conversation on LtU once (perhaps LtU1?) where someone was explaining World-passing style in Clean (I think it was Clean), and explained that there was some syntax for making the World-passing implicit, so that it'll just automatically thread it through for you. I've searched the archives for a while to no avail. Does anyone remember the conversation I'm referring to?

Comment viewing options

Select your preferred way to display the comments and click "Save settings" to activate your changes.

Is it this one?

From monad conversation - Daniel Yokomizo?

don't think so

I don't think so. I do remember that one. There's supposedly some kind of feature where you can say "I've only changed this part of the world; just thread the rest through unchanged." I thought I remembered someone talking about this somewhere, but maybe it wasn't here.

Perhaps that helps

In a old discussion I linked to this section of the Clean Language Report. There's an explanation of Clean's let-before syntax.

Mercury!

Oh! I think it was Mercury I was thinking of, not Clean. I think this was the page I was thinking of:

Definite Clause Grammars