selecting values from hash via list

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

I have a hash or hashref. Let's make it easy, a hash.

my %h = (
   name => 'dumdum',
   age => 14,
   zone => 'a4',
   pocket => 'empty',
);
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I'm going to print some of this data with printf..

printf "%-20s %5d %s\n", $h{name}, $h{age}, $h{zone};
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What's another way to specify those three values? Specifically, as you would as list args.. I know this has to be out there.

I like this trick to init hash keys (learned it here)..

my %a;
my @a = qw/name age zone pocket/;
@a{@a}=();
# looks weird, eh? ;-)
# now 'exists $a{name}' is true!
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Maybe there's some way to ...err... uhhhm ...

printf "%-20s %5d %s\n", @h{qw/name age zone/};
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???

(sorry about the title, dunno how else the heck to word this)

update

Silly me, that second example, that was the solution, thanks toolic

Comment on selecting values from hash via list Select or Download Code

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Re: selecting values from hash via list (slice) by toolic (Bishop) on Nov 06, 2009 at 21:14 UTC
I'm confused. Your 2 printf statements print the same thing for me. Isn't that what you want -- to use a hash slice to save typing? See Slices. `printf "%-20s %5d %s\n", $h{name}, $h{age}, $h{zone}; printf "%-20s %5d %s\n", @h{qw/name age zone/};` [download]	[reply] [d/l]
Re^2: selecting values from hash via list (slice) by leocharre (Priest) on Nov 06, 2009 at 22:23 UTC
Oh.. dear... it works.. I thought I was making up code! I thought this was nonsense! : `printf "%-20s %5d %s\n", @h{qw/name age zone/};`	[reply] [d/l]