Chops off the last character of a string and returns the character
chopped. It is much more efficient than s/.$//s because it neither
scans nor copies the string. If VARIABLE is omitted, chops $_
.
If VARIABLE is a hash, it chops the hash's values, but not its keys.
You can actually chop anything that's an lvalue, including an assignment.
If you chop a list, each element is chopped. Only the value of the
last chop is returned.
Note that chop returns the last character. To return all but the last
character, use substr($string, 0, -1)
.
See also chomp.