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October 31, 2005
Slicing hashes ~ Perl stuff
An elegant way to mix and match hash entries is by using the technique of hash slices. For example, let's just say that you have defined the following hash:
my $config = {
firstname => 'Joseph',
lastname => 'Smith',
user => 'pickle',
...
database => 'fruits',
password => 'z4KLf3&3z',
...
host => 'zeta.demon.nl',
};
Suppose that you are only interested in the hash-keys related to the database stuff. Then you can use the following fancy one-liner:
my ($dbhost, $dbdatabase, $dbuser, $dbpassword) =
@$config{ qw( host database user password ) };
As the saying goes, there is always more than one way to do it with Perl. Pretty neat stuff, wouldn't you say?
Posted at 1:12 PM
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1 Comment(s)
1 /
Now, Lets see some AIML.
Posted by Yuichan at November 1, 2005 5:49 PM
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