I made this subroutine for work so I guess it's more specific than the other two answers, but I find that this one can be modified and understood far easier than the others:

#this prints 0
print getSecondArraySize("la", %test)."\n";

# put stuff in
$test{"la"}[0] = "1";
$test{"la"}[1] = "2";
$test{"la"}[2] = "3";

#this prints 3
print getSecondArraySize("la", %test)."\n";

[download]

And here's the code:

##########################################################
# subroutine getSecondArraySize
# Parameter: An associative array containing scalar 
#            array and the name of a key
# Returns the total amount of element(s) in the scalar
# array within the associative array at the key location
# index
##########################################################
sub getSecondArraySize {

    # receives the argument
    my ($index, %array_to_count) = @_;
    
    # create the variable and get the number
    my $count=0;
    
    # determine the total amount of elements in the array    
    while (defined($array_to_count{$index}[$count])) {
       $count++;
    }   
    return $count;    
}

[download]

In reply to Re: How cand I find each dimension x,y,z of a 3D arrays by Anonymous Monk
in thread How cand I find each dimension x,y,z of a 3D arrays by Arnaud

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