Hamish Whittal said:
>
> I have a reference to an array $ref_arr
>
> I want the length of the array. normally just getting the length one
> would write something along the lines of:
> $length = @#array; # Unless I am mistaken.
Close -- you want $#array instead.
>
> How do I find the length if I have a reference?
>
You can get the index of the last element with $#$ref_arr, and the length
with scalar(@$ref_arr). Try this code:
#! perl -w
use strict;
my @array = ( 0, 1, 1, 2, 3, 5, 8 );
my $ref_arr = \@array;
print
"For array \@array:\n",
'Length of array: ', scalar( @array ) , "\n",
'Index of last element: ', $#array , "\n",
"\n",
"For array referenced via \$ref_arr:\n",
'Length of array: ' , scalar( @$ref_arr ) , "\n",
'Index of last element: ' , $#$ref_arr , "\n",
"\n";
__END__
--Bill
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