How to remove duplicates from a hash
What would be the quickest , easiest way to remove duplicates from a hash? Any suggestions are muchly appreciated. Thanks -Rich -- To unsubscribe, e-mail: beginners-unsubscr...@perl.org For additional commands, e-mail: beginners-h...@perl.org http://learn.perl.org/
Re: How to remove duplicates from a hash
Richard Green wrote:
What would be the quickest , easiest way to remove duplicates from a hash?
Any suggestions are muchly appreciated. Thanks
I assume you mean duplicate values because all keys are unique.
$ perl -le'
use Data::Dumper;
my %hash = qw/ a z b z c x d x e y f g h i /;
print Dumper \%hash;
%hash = reverse %{{ reverse %hash }};
print Dumper \%hash;
'
$VAR1 = {
'e' = 'y',
'c' = 'x',
'h' = 'i',
'a' = 'z',
'b' = 'z',
'd' = 'x',
'f' = 'g'
};
$VAR1 = {
'e' = 'y',
'c' = 'x',
'a' = 'z',
'h' = 'i',
'f' = 'g'
};
John
--
Any intelligent fool can make things bigger and
more complex... It takes a touch of genius -
and a lot of courage to move in the opposite
direction. -- Albert Einstein
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Re: How to remove duplicates from a hash
On Tue, Sep 28, 2010 at 08:10:30AM -0700, Richard Green wrote: What would be the quickest , easiest way to remove duplicates from a hash? Any suggestions are muchly appreciated. Thanks I presume you mean duplicate values, because hashes don't have duplicate keys. Do you care which values get removed? If not, then: %x = reverse %x; %x = reverse %x; will do the trick. That's the quickest and easiest method according to some criteria, anyway. -- Paul Johnson - p...@pjcj.net http://www.pjcj.net -- To unsubscribe, e-mail: beginners-unsubscr...@perl.org For additional commands, e-mail: beginners-h...@perl.org http://learn.perl.org/
Re: How to remove duplicates from a hash
Hi Rich,
On Tuesday 28 September 2010 17:10:30 Richard Green wrote:
What would be the quickest , easiest way to remove duplicates from a hash?
Any suggestions are muchly appreciated. Thanks
-Rich
What do you mean by duplicates from a hash? A hash cannot have duplicate
keys. If you do:
$hash{'name'} = Foo;
And then:
$hash{'name'} = Bar;
Then you won't have two 'name' keys - only one whose value will be Bar.
See:
http://perl-begin.org/topics/hashes/
Regards,
Shlomi Fish
--
-
Shlomi Fish http://www.shlomifish.org/
What Makes Software Apps High Quality - http://shlom.in/sw-quality
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Re: How to remove duplicates from a hash
These are great suggestions thanks everyone! -Rich On Sep 29, 2010, at 2:39 AM, Paul Johnson p...@pjcj.net wrote: On Tue, Sep 28, 2010 at 08:10:30AM -0700, Richard Green wrote: What would be the quickest , easiest way to remove duplicates from a hash? Any suggestions are muchly appreciated. Thanks I presume you mean duplicate values, because hashes don't have duplicate keys. Do you care which values get removed? If not, then: %x = reverse %x; %x = reverse %x; will do the trick. That's the quickest and easiest method according to some criteria, anyway. -- Paul Johnson - p...@pjcj.net http://www.pjcj.net -- To unsubscribe, e-mail: beginners-unsubscr...@perl.org For additional commands, e-mail: beginners-h...@perl.org http://learn.perl.org/ -- To unsubscribe, e-mail: beginners-unsubscr...@perl.org For additional commands, e-mail: beginners-h...@perl.org http://learn.perl.org/
How to get the Pause ID
Hi All, I have been trying to get Pause ID but seems like either the request is getting rejected or something is wrong in the way I am raising the request. I have applied twice in past. EG: http://www.nntp.perl.org/group/perl.modules/2010/09/msg72805.html Could someone please share some pointers on it. Cheers, Parag
Re: How to get the Pause ID
2010/9/30 Parag Kalra paragka...@gmail.com: Hi All, I have been trying to get Pause ID but seems like either the request is getting rejected or something is wrong in the way I am raising the request. Please send the message to the CPAN related mailing lists. http://lists.perl.org/all.html -- To unsubscribe, e-mail: beginners-unsubscr...@perl.org For additional commands, e-mail: beginners-h...@perl.org http://learn.perl.org/
