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Re: smartmatch with multiple search values

by dsheroh (Prior)
on Jul 17, 2019 at 07:27 UTC ( #11102944=note: print w/replies, xml ) Need Help??


in reply to smartmatch with multiple search values

Looks to me like you aren't really that interested in the order of the values in @owner_grouprights and instead just want to be able to easily check whether specific values are present or not. This is not a job for an array. You want a hash:
#!/usr/bin/env perl use strict; use warnings; use 5.010; # Don't really need the qw, since these are numbers, but the original # code explicitly made them strings, so whatever. my @owner_grouprights = qw( 11 14 ); my %rights_hash; $rights_hash{$_}++ for @owner_grouprights; if (exists $rights_hash{11}) { say "test3"; } for (4 .. 12) { if (exists $rights_hash{$_}) { say "test2"; last; # avoid duplicate messages if more than one is present } } # Or, alternately: if (grep /4|5|6|7|8|9|10|11|12/, keys %rights_hash) { say "test2 alt"; } # Note, though, that the two alternatives are not equivalent. The # first (if exists) only returns exact matches, while the second # (grep) also finds substring matches. So, e.g., 114 would match the # 'grep' version, but not the 'if exists' version. Adding begin/ # end-of-string anchors (^/$ or \A/\Z) to the 'grep' version's regex # will disallow partial matches if you want that, but don't want the # explicit 'for' loop. my $owner_grouprights = join( ' ', sort keys %rights_hash); my @testarr = (4 .. 12); for my $tst (@testarr) { if (exists $rights_hash{$tst}) { say "$tst hit!"; } else { say "$tst miss"; } }

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Re^2: smartmatch with multiple search values
by toohoo (Beadle) on Nov 19, 2019 at 08:09 UTC

    Hello @dsheroh,

    thank you very much. It seems the hash solution is the most best one can use in my case.

    Thanks and have a nice day.

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