perl add key value pair to hash
#!/usr/bin/perl
#-----------------------------------------
# perl-hash-add.pl
# created by alvin alexander, devdaily.com
#-----------------------------------------
# create a perl hash
$prices{'pizza'} = 12.00;
$prices{'coke'} = 1.25;
$prices{'sandwich'} = 3.00;
# traverse the perl hash and print
# the key/value pairs
print "\nforeach output:\n";
foreach $key (keys %prices)
{
# do whatever you want with $key and $value here ...
$value = $prices{$key};
print " $key costs $value\n";
}