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Re: Dereference array of arrays

by 2teez (Priest)
on Nov 12, 2013 at 14:52 UTC ( #1062206=note: print w/ replies, xml ) Need Help??


in reply to Dereference array of arrays

perldsc

UPDATE:
Or you could do like so:

use warnings; use strict; my $array_ref = [ [ '0.93', 'a1', 'b1' ], [ '0.89', 'a2', 'b2' ], [ '0.88', 'a3', 'b3' ], [ '0.87', 'a4', 'b4' ], [ '0.86', 'a5', 'b5' ] ]; for my $val (@$array_ref) { for ( 1 .. $#$val ) { print $val->[$_], $/; } }

If you tell me, I'll forget.
If you show me, I'll remember.
if you involve me, I'll understand.
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Comment on Re: Dereference array of arrays
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Re^2: Dereference array of arrays
by Eily (Hermit) on Nov 12, 2013 at 15:29 UTC

    Or even just:

    use warnings; use strict; my $array_ref = [ [ '0.93', 'a1', 'b1' ], [ '0.89', 'a2', 'b2' ], [ '0.88', 'a3', 'b3' ], [ '0.87', 'a4', 'b4' ], [ '0.86', 'a5', 'b5' ] ]; for my $row (@$array_ref) { for my $element (@$row) { print $element, "\n"; # using say, or setting $\ locally would wo +rk as well } }
    You often have no need to know the indexes when looping through an array. And since an array begins with index 0, you would skip the first element with : for ( 1 .. $#$val ) UPDATE: which is done on purpose, my bad \o/

      ..You often have no need to know the indexes when looping through an array. And since an array begins with index 0, you would skip the first element with : for ( 1 .. $#$val )..

      And how was I looping through the array of array provided by the OP? Please check Re: Dereference array of arrays again. OR maybe that is met for the OP.

      If you tell me, I'll forget.
      If you show me, I'll remember.
      if you involve me, I'll understand.
      --- Author unknown to me

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