> One of the problems with prototypes is that they are not prototypes, at
> least not in the sense that other programming languages use them. 

I am aware of this "problem", which, personally, I don't consider a problem,
because it is documented fairly clearly.


> Instead, they allow us, amongt other things, to force function arguments
> into a particular context.  In your example, the first argument *doesn't*
> have to have a scalar value.

I wasn't using the prototype to check the parameters, I was using it to ease
the use of the function.  Without the prototype the function would have to
be called thusly:

    append_and_print(\$stuff_to_print, "hi", " there\n");

The prototype serves simply to enreference $stuff_to_print, so it doesn't
have to be enreferenced by the programmer using it.  It was meant for
nothing more.  With both solutions there is the possibility of passing a
reference to another type of data.  The only solution, if this is considered
a serious enough problem, is to check the parameters more thoroughly.  The
code snippet I gave was but an example of one solution, it was not meant to
be used without examination by the person using it.


Michael
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Programmer, System Administrator   www.gallanttech.com
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