Beefy Boxes and Bandwidth Generously Provided by pair Networks
XP is just a number
 
PerlMonks  

Re: Unique key/value pair in Multiple key values pair in Hash

by roboticus (Chancellor)
on Feb 18, 2013 at 13:49 UTC ( #1019343=note: print w/replies, xml ) Need Help??


in reply to Unique key/value pair in Multiple key values pair in Hash

Seek_Knowledge:

If you're interested in the unique values, I'd suggest adding another level to your hash, something like:

use strict; use warnings; my %hash; while (<DATA>) { s/\s+$//; my ($key1, $key2) = split /\s+/, $_; $hash{$key1}{$key2}++; } for my $k1 (sort keys %hash) { print "$k1: ", join(", ", sort keys %{$hash{$k1}}), "\n"; } __DATA__ Lemon Juice Lemon Cake Apple Cider Lemon Cake Apple Butter Apple Sauce Apple Juice Lemon Juice

Note: The code is untested, but I'd expect output like:

Apple: Butter, Cider, Juice, Sauce Lemon: Cake, Juice

...roboticus

When your only tool is a hammer, all problems look like your thumb.

Log In?
Username:
Password:

What's my password?
Create A New User
Node Status?
node history
Node Type: note [id://1019343]
help
Chatterbox?
and the web crawler heard nothing...

How do I use this? | Other CB clients
Other Users?
Others meditating upon the Monastery: (6)
As of 2016-10-01 22:49 GMT
Sections?
Information?
Find Nodes?
Leftovers?
    Voting Booth?
    How many different varieties (color, size, etc) of socks do you have in your sock drawer?






    Results (9 votes). Check out past polls.