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Perl Programming/Keywords/cmp
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Perl closedir connect Keywords
The cmp keyword
cmp is a binary function that returns -1, 0, or 1 depending on whether the left argument is stringwise less than, equal to, or greater than the right argument. In other words, cmp does the same textually what the binary function <=> does.
Syntax
EXPRESSION cmp EXPRESSION
Examples
The code
use strict;
use warnings;
my @array = ("Hotel", "Alpha", "Foxtrott", "Bravo", "India", "Charlie", "10", "-10", "9", "-9", "Echo", "Delta");
my @sorted_array = (sort { $a cmp $b } @array);
print join(",", @sorted_array), "\n"; returns array contents sorted alphabetically: -10, 10, Alpha, Bravo, Charlie, Delta, Echo, Foxtrott, Hotel, India
See also
sort
Perl closedir connect Keywords