> That's not really accurate. What was said to that:
>
> @list = "@list";
>
> Creates a joined string of elements and replaces the
> list with that one
> item. It's perfectly reasonable to stringify an
> array, without
> altering the array's contents:
>
> print "@list\n";
>
I'm not sure I understand.
>
> That can just be if ($_ % 2), if you prefer. Zero
That makes perfect sense. Thanks.
> > {
> > unshift(@primelist, $_);
> > @primelist\n";
>
> The above line is not a valid Perl statement.
>
Oh, the "@primelist\n"; ? I'm not sure how that got
there...
> > Now what I'd like to do to test whether or not I
> have
> > a prime number is to get at each element in
> > @primelist, and use the modulus operator on each
> > element against each element in @list. For
> example:
> > $primelist[0] % $list[0]
> > $primelist[0] % $list[1]
> > $primelist[0] % $list[2]
> > $primelist[1] % $list[0]
> > $primelist[1] % $list[1]
> > $primelist[1] % $list[2]
> > $primelist[2] % $list[0]
> > $primelist[2] % $list[1]
> > $primelist[2] % $list[2]
> >
> > and if the result doesn't equal 0 for every test
> > except for against itself, then I want to unshift
> it
> > onto @primelist.
> >
> > I thought I'd do this with nested foreach loops,
> but
> > that didn't seem to work. Any ideas?
>
> Define "didn't seem to work"? On second thought,
> just post that nested
> foreach and let us help you fix it.
>
> James
>
Ok, I went with for loops. As above, I want to get
the modulus of numbers in one array by comparing the
numbers of another array. It's not doing what I
expect it to. I'm not sure if the first loop is
really running either. What am I doing wrong? (Does
that question make sense?)
Also, I'm getting an error: Use of uninitialized value
in modulus (%) at primeNumbers.pl line 40, <STDIN>
line 1.
Illegal modulus zero at primeNumbers.pl line 40,
<STDIN> line 1.
What do those errors mean exactly? Thanks.
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