strong/weak typing and pointers
steven.bethard at gmail.com
Tue Nov 2 19:26:28 CET 2004
Diez B. Roggisch <deetsNOSPAM <at> web.de> writes:
> I'm not sure how things are implemented internally, but I'd still say my
> definition is correct even for this example: The + operator can be viewed
> as overloaded with the signature
> (float, int) -> float
> But its not for (string, int) - albeit * e.g. is.
So you would say that in PHP the + operator cannot be viewed as overloaded with
the signature (string, int) -> string? I don't know PHP, so could you maybe you
could give an example of why you think this is so?
> The question remains if permanent coercions as php (and afaik perl) do can
> also be considered weak typing, as you won't end up with an error for more
> or less anything you do.
Sorry, I don't know what "permanent coercions" means. Could you explain?
"Permanent coercions" makes me expect something like:
>>> a = 1.0
>>> b = 1
>>> a + b
where b's value has been coerced into a float (and reassigned to b) because of
the addition of a. I'm guessing this isn't what you meant...
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