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Re^2: Multidimensional Arrays

by wfsp (Abbot)
on Nov 25, 2004 at 10:12 UTC ( #410365=note: print w/ replies, xml ) Need Help??


in reply to Re: Multidimensional Arrays
in thread Multidimensional Arrays

my @another = \$arr[1];

@another has a single element - a reference to a reference to an array.

Try:

${${$another[0]}}[$i]

Update: fixed typo


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Re^3: Multidimensional Arrays
by chb (Chaplain) on Nov 25, 2004 at 10:54 UTC
    This works, too:
    @{${$another[0]}}[$i]
    I think ist is a little bit clearer (from in to out): 1. fetch array element 0, 2. dereference, 3. treat it like an array, 4. fetch via [$i].

    But this all looks really ugly. It would be better to fix the strange assignment to @another than to use such a complicated expression just to fetch a value...

      You're right.

      I find Perl's data structures very useful but often get into a tangle with them. The main reason I had a go at the OP's question was to see if I could fathom it out. I was so pleased when I actually got something to work I couldn't resist the urge to show off!

      I must now confess that I dereferenced it in stages first using temps. This is what I usually do myself if only so that I can still understand it the following day.

      ++ to you for being helpful rather than trying to be clever. My bad!

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