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Top Forums Shell Programming and Scripting Perl: Any quick way to use regex on hash keys? Post 302428436 by durden_tyler on Thursday 10th of June 2010 02:17:03 AM
Old 06-10-2010
That looks quite okay. I tested out a similar logic with 7000 keys, and the time taken to create the hash + match + print is less than 1 second.

Code:
$ time perl -le 'BEGIN{$p="123"} foreach (120000..127000){$x{$_} = "xyz"} foreach $k(keys %x){if ($k =~ m/^$p.*/){print $k}}'
123223
123696
123691
...
...
123322
123712
123719

real    0m0.106s
user    0m0.048s
sys    0m0.019s
$

Maybe the bulk of the time is spent in the "do something" part ?

tyler_durden
 

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FormValidator::Simple::Results(3pm)			User Contributed Perl Documentation		       FormValidator::Simple::Results(3pm)

NAME
FormValidator::Simple::Results - results of validation SYNOPSIS
my $results = FormValidator::Simple->check( $req => [ name => [qw/NOT_BLANK ASCII/, [qw/LENGTH 0 10/] ], email => [qw/NOT_BLANK EMAIL_LOOSE/, [qw/LENGTH 0 30/] ], ] ); if ( $results->has_error ) { foreach my $key ( @{ $results->error() } ) { foreach my $type ( @{ $results->erorr($key) } ) { print "invalid: $key - $type "; } } } DESCRIPTION
This is for handling resuls of FormValidator::Simple's check. This object behaves like Data::FormValidator's results object, but has some specific methods. CHECK RESULT
has_missing If there are missing values ( failed in validation 'NOT_BLANK' ), this method returns true. if ( $results->has_missing ) { ... } has_invalid If there are invalid values ( failed in some validations except 'NOT_BLANK' ), this method returns true. if ( $results->has_invalid ) { ... } has_error If there are missing or invalid values, this method returns true. if ( $results->has_error ) { ... } success inverse of has_error unless ( $resuls->success ) { ... } ANALYZING RESULTS
missing no argument When you call this method with no argument, it returns keys failed 'NOT_BLANK' validation. my $missings = $results->missing; foreach my $missing_data ( @$missings ) { print $missing_data, " "; } # -- print out, for example -- # name # email key When you call this method with key-name, it returnes true if the value of the key is missing. if ( $results->missing('name') ) { print "name is empty! "; } invalid no argument When you call this method with no argument, it returns keys that failed some validation except 'NOT_BLANK'. my $invalids = $results->invalid; foreach my $invalid_data ( @$invalids ) { print $invalid_data, " "; } # -- print out, for example -- # name # email key When you call this method with key-name, it returns names of failed validation. my $failed_validations = $results->invalid('name'); foreach my $validation ( @$failed_validations ) { print $validation, " "; } # -- print out, for example -- # ASCII # LENGTH key and validation-name When you call this method with key-name, it returns false if the value has passed the validation. if ( $results->invalid( name => 'LENGTH' ) ) { print "name is wrong length! "; } error This doesn't distinguish 'missing' and 'invalid'. You can use this like 'invalid' method, but this consider 'NOT_BLANK' same as other validations. my $error_keys = $results->error; my $failed_validation = $resuls->error('name'); # this includes 'NOT_BLANK' if ( $results->error( name => 'NOT_BLANK' ) ) { print "name is missing! "; } if ( $results->error( name => 'ASCII' ) ) { print "name should be ascii code! "; } SEE ALSO
FormValidator::Simple AUTHOR
Lyo Kato <lyo.kato@gmail.com> COPYRIGHT AND LICENSE
This library is free software. You can redistribute it and/or modify it under the same terms as perl itself. perl v5.14.2 2011-12-08 FormValidator::Simple::Results(3pm)
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