> more elaborate compile-time facilities, which would also provide extremely
> powerful meta programming features
That's an interesting twist — but whenever you put a "meta" somewhere, things
tend to get complicated, and people end up with different associations to the
topic… ;-)
I took a brief look at the C++ document, but it seemed still to much macro-like
to me.
My take on the topic would be he ability to express common programming tasks
(declaring a class, overriding a method…) in the language itself.
Imagine
public class ProxyViewController: UIView {}
Could be written as
let subclass = createClass(classname: "ProxyViewController", superclass:
UIViewController, accessLevel: .public)
Quite stupid at first sight, and basically the exact opposite of syntactic
sugar ("syntactic salt" already has a meaning… so I'd call it "syntactic
pepper" ;-).
But now imagine that:
for (method, implementation) in UIViewController.methods where
method.accessLevel == .open {
subclass.methods[method] = { parameters in
print("Subclass method \(method) called with \(parameters)")
return implementation(parameters)
}
}
Not that stupid anymore, isn't it?
I think this would be way cooler than poking around with variants of search &
replace…
- Tino
(to get syntax colouring, I wrote ~30 lines of Swift that turn the straw man
example into valid code… it's fun, maybe I play with it a little bit more ;-)_______________________________________________
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