On 14/11/2012, at 7:24 PM, john skaller wrote:
>
> So what I think we need to "fool"** Java programmers into thinking we
> have OO is a simple syntax for method delegation. Any suggestions
> how to encode the above technique in a slightly nicer syntax?
OMG. Its already implemented!
object joe[T] (x:list[T]) extends fred x as var y implements B[T] = {
method proc pprint () { print "Hello "; y.print(); }
}
This "just works"!!
Note the expression:
fred x as var y
The "var" bit there is new. This assigns a name (an variable)
to the expression "fred x", *inline* i.e. from inside an expression.
I checked, it doesn't escape to global scope in this case either.
We need the name to implement pprint.
Even MORE magical ..
object joe[T] (x:list[T]) extends fred x as var y implements B[T] = {
method proc pprint () { print "Hello "; y.print(); }
method proc print () { print "OVERRIDE "; y.print(); }
}
This *just works* too.
I'm not going to even bother checking that this construction
can do multiple inheritance because I KNOW it can
(just from the grammar!)
[CRAP! I should learn my own language!]
--
john skaller
skal...@users.sourceforge.net
http://felix-lang.org
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