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Re^2: A Case with 5 Var's

by ultibuzz (Monk)
on Jan 25, 2007 at 12:45 UTC ( #596466=note: print w/ replies, xml ) Need Help??


in reply to Re: A Case with 5 Var's
in thread A Case with 5 Var's

sounds interessting, so i need to check the vector bit pattern to generate a matching qry
and this i woud do again with if and co ;/ because i don't know another way
kd ultibuzz


Comment on Re^2: A Case with 5 Var's
Re^3: A Case with 5 Var's
by GrandFather (Cardinal) on Jan 25, 2007 at 21:56 UTC

    It depends a lot on where you want to go with this. One technique would be to use a hash to generate a dispatch table. Consider:

    use strict; use warnings; my %dispatch = ( 0b000001 => \&noneTrue, 0b111110 => \&allTrue, 0b001101 => \&firstLine, ); my $name = ''; my $vorname = 'full'; my $plz = 1; my $tel = 0; my $tel49 = undef; while (<DATA>) { chomp; my ($name, $vorname, $plz, $tel, $tel49) = split ','; my $vector = (!$name) || 2; $vector |= (!$vorname) || 4; $vector |= (!$plz) || 8; $vector |= (!$tel) || 16; $vector |= (!$tel49) || 32; $dispatch{$vector}->($.) if exists $dispatch{$vector}; } sub noneTrue { print "None true in input line $_[0]\n"; } sub allTrue { print "All true in input line $_[0]\n"; } sub firstLine { print "Matched first line pattern at input line $_[0]\n"; } __DATA__ ,full,1,0, first,second,3,4, 1,2,3,4,5 ,,3,4, last,,,,

    Prints:

    Matched first line pattern at input line 1 All true in input line 3 None true in input line 5

    DWIM is Perl's answer to Gödel

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