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Difference between revisions of "Perl/Basics/Hashes/Helper Functions"
From NetSec
Chantal21I (Talk | contribs) (Created page with "=====each()===== {{:Perl/Basics/Hashes/Helper Functions/Each}} =====keys===== {{:Perl/Basics/Hashes/Helper Functions/Keys}}") |
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Latest revision as of 01:39, 19 July 2012
each()
"while my each" can be used to isolate $key => $value pairs from a hash as follows with our %user hash:
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<syntaxhighlight lang="perl">while(my($key,$value) = each(%user)) { print "Key: $key, Value: $value\n"; };</syntaxhighlight> |
keys
This uses a foreach() loop and casting. We can isolate $key=>$value pairs the same as above using keys in stead of each:
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<syntaxhighlight lang="perl">foreach my $key (@{sort keys %user}) { print "Key: $key, Value: ". $user{$key} ."\n"; };</syntaxhighlight> |
