411 REFERENCE · Wikibooks
Perl Programming/Keywords/chop
Reference material by Wikibooks contributors. This retains its source identity and is not 411 news reporting.
Perl chomp chown Keywords
The chop keyword
The chop function chops off the last character of a string and returns it. It is much more efficient than s/.$//s, as it neither scans nor copies the string. Without VARIABLE, it chops $_. If VARIABLE is a hash, it chops the hash's values, not its keys, and resets the each iterator in the process.
If a list is chopped, each element is chopped off, but only the value of the last chop is returned. Note that chop returns the last character. To return all but the last character, substr($string, 0, -1) should be used.
Syntax
chop VARIABLE
chop(LIST)
chop
Examples
The code
use 5.10.0;
%favorite = (joe => 'red', sam => 'blue', walter => 'black');
%list = %favorite;
say "%favorite = ";
foreach my $element (%favorite) {
say $element;
}
say "Now, chopping...";
say chop(%favorite);
say "%favorite = ";
foreach my $element (%favorite) {
say $element;
} returns the following: %favorite =
walter
black
joe
red
sam
blue
Now, chopping...
e
%favorite =
walter
blac
joe
re
sam
blu
Perl chomp chown Keywords