sorting hash of hash by values

bragafra has asked for the wisdom of the Perl Monks concerning the following question:

Hi all,

I have a complex hash of hash, and i want to sort by keys..
I put here a simplified example...

$fruit{apple}{weight}=100;
$fruit{apple}{color}="red";
$fruit{lemon}{weight}=190;
$fruit{lemon}{color}="yellow";
$fruit{grapes}{weight}=40;
$fruit{grapes}{color}="blue";

I want to obtain something like (sorted by weight ascending...)
@sortedkeys=("grapes","apple","lemon")

Which is the best way in your opinion ?

Thank you

Comment on sorting hash of hash by values

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Re: sorting hash of hash by values by Corion (Patriarch) on Mar 30, 2010 at 13:30 UTC
This is a FAQ. Typing `perldoc -q sort` at the command prompt or reading perlfaq4 on How do I sort a hash (optionally by value instead of key) explains how to do what you want.	[reply] [d/l]
Re^2: sorting hash of hash by values by bart (Canon) on Mar 30, 2010 at 13:57 UTC
Also: How do I sort an array by (anything)? and FMTEYEWTK about sorting	[reply]
Re^3: sorting hash of hash by values by bragafra (Initiate) on Mar 30, 2010 at 14:24 UTC
Thank you :)	[reply]