By one definition, arrays in Perl are only one dimensional, so there is only one row (or column) to print.

For instance, examining a 2D array in the debugger gives: 

  DB<1> @x = ( [qw(a b c)], [qw(d e f)], [qw(g h i)])

  DB<2> x @x
0  ARRAY(0x15d5240)
   0  'a'
   1  'b'
   2  'c'
1  ARRAY(0x1cbe3f4)
   0  'd'
   1  'e'
   2  'f'
2  ARRAY(0x1cbe430)
   0  'g'
   1  'h'
   2  'i'
  DB<3>

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This shows, for instance, that $x[0] is an array reference (ARRAY(0x15d5240)), and points to an array equivalent to qw(a b c).

To print a single row of a multidimensional array, you must first define which is the row index.

For the first index, this works: 

my @x = ( [qw(a b c)], [qw(d e f)], [qw(g h i)]);
my $row = 1; # print this row
foreach my $col (0..$#{$x[$row]} )
{
    print "$x[$row][$col]\n";
}

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prints 
d
e
f

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If you need something more general, speak up.

-QM
--
Quantum Mechanics: The dreams stuff is made of

In reply to Re^2: print one row of array by QM
in thread print one row of array by Anonymous Monk

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