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Re: searching characters

by citromatik (Curate)
on Jun 17, 2009 at 14:40 UTC ( #772416=note: print w/ replies, xml ) Need Help??

in reply to searching characters

You can use the tr operator:

return 0 if (($line =~ tr/$base/$base/) >= $limit);


Comment on Re: searching characters
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Re^2: searching characters
by JavaFan (Canon) on Jun 17, 2009 at 14:46 UTC
    tr doesn't do interpolation:
    my $line = "ABABABAB"; my $limit = 3; my $base = "A"; say "Yes 1" if $line =~ tr/$base/$base/ >= $limit; say "Yes 2" if eval "\$line =~ tr/$base/$base/" >= $limit; __END__ Yes 2
    You need an eval to interpolate.
Re^2: searching characters
by ikegami (Pope) on Jun 17, 2009 at 14:51 UTC
    tr/// doesn't interpolate. You could use m// or s/// instead.
    return 0 if ( () = $line =~ /\Q$base/g ) >= $limit;
    return 0 if ( $line =~ s/\Q$base//g ) >= $limit;

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