Array Question 1

[jmdc]

Is there a quick way to find out the last element of an array? for example if I opened up a directory for reading and put the contents into an array. How can I find out how many elements there are in that array? Once I get that information I want to put that value into a variable. If I'm not making sense please let me know.

 

[133tcamel]

>Is there a quick way to find out the last element of an array?

my $last_ele = @array[-1];

>How can I find out how many elements there are in that array?

my $num_ele = $#array + 1; #for @array ---
cheers!
san.

 

[133tcamel]

sorry about that, it should be:

my $last_ele = $array[-1];
---
cheers!
san.

 

[melban]

@array = ("one", "two", "three"

$removed = pop(@array);

# "$removed" is now equal to "three"
# but the array is equatl to ("one", "two&quot
# to replace it use the following code

push(@array, $removed);

# the array is equatl to ("one", "two", "three&quot


##############


For the question of counting each addition to the array just set $i = "0" and then have the string "$++;" in the loop each time you add a string to the array.

 

[justice41]

Accessing the array in scalar context will give you the number of values in the array

$numvals = scalar(@array);

Or just

$numvals = @array;

@array is in scalar context here because the lvalue ($numvals) is a scalar

In addition [tt]$#array[/tt] gives you the index of the last value in the array.
Example usage:

foreach $i (0..$#array) {

    print $array[$i];
}

jaa