Chop function has three syntax forms:

chop VARIABLE 
chop (LIST)
chop

For instance, the following code shows you how to chop the last character from a string variable:

$v = 'Flowers';
$r = chop($v);
print "$v (without $r)\n";
# displays Flower (without s)

If the string is empty or undefined, the Perl chop function will return an empty string respectively undefined.

You can use chop with anything that's a lvalue, including an assignment, as in the following example:

chop($color = 'reds');
print "$color\n";
#displays red;

to see a lot of fully commented examples that help you use the Perl statements and the Perl buit-in functions in your scripts.

Chopping an array will cause all the elements of the array to be chopped:

# define an array
@flowers = qw(roses tulips violets snowdrops);
chop(@flowers);
print join(" ",@flowers), "\n"; 
# displays rose tulip violet snowdrop

#define a hash
%colors = (
               red => 'roses', 
               yellow => 'tulips',
               white => 'snowdrops'
);
chop(%colors);
while (($key, $value) = each % colors)
{
  print "$key : $colors{$key}\n";
}

white : snowdrop
red : rose
yellow : tulip

For instance, see the next code:

# define an array
@flowers = qw(roses tulips violets snowdrops);
# let’s iterate through its elements using foreach loop
foreach (@flowers) {
  chop;
}
print "@flowers\n";
# displays rose tulip violet snowdrop

• the $_ variable is set with the current element of the list
• the string from $_ is chopped by its last character

to see a lot of fully commented examples that help you use the Perl statements and the Perl buit-in functions in your scripts.