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>> Good morning,
>> The safety argument (see my previous message) is serious
>> enough that Robert's list of pro-procedure variables
>> arguments deserves to be reconsidered.
You seem to be saying that objects are not
much extra work if someone else does it for you.
I can't disagree!
I can't decide how seriously to take your safety
argument. When I use procedure types (very rare,
but by coincidence I found them very useful yesterday)
I usually keep them local to 1 module so am not exposed
to this risk. But I guess just the possibility of risk
means that it will inevitably happen when you least
expect it.
Even in a 'safe' language you can't (shouldn't ?) provide
complete protection to developers. They will always
need access to SYSTEM. But this warns them when they
need to take particular care. Doesn't unloading
come into a similar category? After all it is something
that cannot happen to 'production' code as it
requires Module DevDebug which would not be available.
>> > 6 - Brevity. .. The .Eval in cube.Eval
>> > just seems to visually clutter maths expressions.
>>
>> M.cube.Eval(x) vs L.Cube(x).
>> The difference is really not that great. Although visible.
>> In my numeric problems, this kind of expressions are a
>> fraction of the actual code.
Room for shades of opinion.
My colleage (a Java user) downloaded a new version
this week which now allows 'Static Imports' or something
similar (I don't speak Java myself).
This meant he could replace 'a = M.cos (2 * M.pi * x)'
by 'a = cos (2 * pi * x)'. He thought this was a big
improvement.
>> > 7 - If I select R.Cube, right click, I get immediate
>> access to the interface,
>> > source, and Docu. This is very nice. It does not work if
>> I select cube.Eval.
>>
>> But it does, if one selects M.cube.Eval.
No it does not! If I select TextModels.dir.New I
do not get the documentation for the New function.
>> > been declared as a Store I could Externalise cube. Question: does
>> > creating a Store extension have a significant overhead inside a
>> > big loop?
>>
>> As far as I understand, any method call involves just one
>> extra memory jump, irrespective of the length of
>> inheritance chain (compiler creates a type descriptor for
>> each type, with an array of pointers to method entry
>> points, and for a non-extended method, the pointer is
>> simply copied from the parent type descriptor to the child's one).
My question concerned CREATING a Store extension, not USING it. I
suspect it is a rather complex thing to initialise.
Cheers
Robert
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Received on Fri Nov 19 2004 - 11:07:57 UTC