Felix has a forward composition operator:
(f \circ g) x = f (g x)
There's no reverse composition operator, because I can't think of
a suitable symbol. Operator dot (.) was used before and leads
to a nice notation:
x . (f . g) = (x . f) . g
but it doesn't work because f. g means
I have now (hopefully) implemented functional composition using
operator dot:
//-
fun f(x:int)=>x + x;
fun g(x:int)=> x * x;
// simple case, rhs is a name
val k = f . g;
//println$ 1 . k;
println$ 1 . f . g;
var z = (f . g) 1;
println$ 1 . (f . g);
println$ 1 . (g . f);
// here
