Re: How come Ada isn't more popular?


Maciej Sobczak <no.spam@xxxxxxxxxxx> writes:

Dmitry A. Kazakov wrote:


For handling cycles there are weak pointers.

Not only.

Not at all you wanted to say.

If you have cycles, then you'd better rethink the design.

let rec fac n = if n = 0 then 1 else n * (fac (n-1));;

a) closure
b) cycle

:-).

A lot of OO models with callback also require cycles. E.g. A knows B
and B registers a callback with A in certain situations.

The difference is between a) graph treated as a mesh (or mess) of
nodes which "own" each other and b) graph treated as a collection of
nodes.

The former might have ownership cycles between nodes, but not the
latter, where ownership is an acyclic relation between graph and nodes.

I agree that this kind of restructuring is not always possible, but
^^^^^^^^^^^^^^^^^^^^^

!!.

Regards -- Markus

.

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