Re: Can overloaded '+' return an array? If so, how?

PeterSShenkin wrote:

The issue is that "combine", which is the function that '+' maps to,
returns an array. When, in the main program, I say:

my @ar = $ca1 + ca2

I expect the "combine" function to be called in list context. But
evidently it is called in scalar context, because my @ar variable
receives the cardinality of the "result" array, rather than a copy of
the array.

...

(If, instead of what I do in the example, I return a reference to the
array, and alter my main routine correspondingly, then, of course,
everything works.)


I fiddled around with your test code, and I found that, while the
code:

my @ar = $ca1 + ca2;

is not called in list context, the following three functionally
equivalent lines:

my @ar = $ca1->combine($ca2);
my @ar = combine $ca1 $ca2;
my @ar = ClassAct::combine($ca1, $ca2);

do return an array as you want -- without the need to change the
combine() method.

(I don't know if this information is useful to you or not, but I
thought I'd share it anyway).

-- Jean-Luc

--
perl -le "print(pack'B*','0'.unpack'B*',pack'w*',
5592691776,37562575106519616,25926642752,354130435682904)"

.

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