Layout try 3

[complyue]

Based on #6, I'd like to explore OO with implicits, but so far haven't had it compiles.

A major pursue in my mind is to have a single (instead of two) object identity to facilitate customizable html page template, by providing self (likely super too) reference to all methods of a single record-of-functions.

@TimWhiting do you think this direction could be feasible?

[TimWhiting]

I like this API, I think the only thing that it lacks is the ()() syntax for getting a function value from the struct and then calling it.

There is a good reason for it - for example, in the following you are wanting to return a closure and not necessarily immediately apply it.

fun main()
  val y = 1.dox
  y()

fun dox(x: int): (() -> int)
 fn() x + 1

Since struct accessors are just desugared to a function that matches on the value and gets the appropriate field, they have the same behavior, though I think we should desugar functions fields a bit differently in Koka. For now I think we should merge this one if it looks good to you.

[complyue]

nice to see this compiles and actually works! yeah, we can figure out how to polish the ()() syntax later, it's already acceptable to me by far. pls merge it.