chop - remove the last character from a string
chop VARIABLE
chop LIST
chop
Chops off the last character of a string and returns the character chopped.
It's used primarily to remove the newline from the end of an input record,
but is much more efficient than s/\n//
because it neither scans nor copies the string. If
VARIABLE is omitted, chops $_
. Example:
while (<>) { chop; # avoid \n on last field @array = split(/:/); #... }
You can actually chop anything that's an lvalue, including an assignment:
chop($cwd = `pwd`); chop($answer = <STDIN>);
If you chop a list, each element is chopped. Only the value of the last chop() is returned.
Note that chop() returns the last character. To return all but the last character, use substr($string, 0, -1).
If rather than formatting bugs, you encounter substantive content errors in these documents, such as mistakes in the explanations or code, please use the perlbug utility included with the Perl distribution.