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Re: Matching elements inside two array

by hdb (Monsignor)
on Apr 10, 2019 at 08:01 UTC ( #1232392=note: print w/replies, xml ) Need Help??


in reply to Matching elements inside two array

In cases like this I prefer to first classify each label by setting a flag in which array it is present. I do this by using bits (1 for @input_array, 2 for @input_A, 4 for @input_B). In the second step the labels are processed based on their flags.

use strict; use warnings; my @input_array = qw( N1 N2 N3 N6 N7 ); my @input_A = qw( N1 N3 N11 N11 N10 N16 ); my @input_B = qw( N3 N6 N2 N7 N16 N19 ); my %flags; $flags{$_} |= 1 for @input_array; $flags{$_} |= 2 for @input_A; $flags{$_} |= 4 for @input_B; my %primaryCCO; for (keys %flags) { next unless $flags{$_} & 1; print "$_: only 1 input is PI\n" if $flags{$_} == 3; print "$_: this is a wire\n" if $flags{$_} == 5; if( $flags{$_} == 7 ) { $primaryCCO{$_} = [1,1]; print "$_: CCO = ( @{$primaryCCO{$_}} )\n"; } }

Remark: I have implied the desired logic from Athanasius output rather than studying your code, so I hope I got it right...

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Re^2: Matching elements inside two array
by hdb (Monsignor) on Apr 10, 2019 at 08:24 UTC

    And a version based on a dispatch table (which is definitely overkill in a simple situation like this):

    use strict; use warnings; my @input_array = qw( N1 N2 N3 N6 N7 ); my @input_A = qw( N1 N3 N11 N11 N10 N16 ); my @input_B = qw( N3 N6 N2 N7 N16 N19 ); my %flags; $flags{$_} |= 1 for @input_array; $flags{$_} |= 2 for @input_A; $flags{$_} |= 4 for @input_B; my %primaryCCO; my %dispatch = ( 3 => sub { my $label = shift; print "$label: only 1 input is PI\n" + }, 5 => sub { my $label = shift; print "$label: this is a wire\n" }, 7 => sub { my $label = shift; $primaryCCO{$label} = [1,1]; print "$label: CCO = ( @{$primaryCCO{$label}} )\n"; }, ); exists $dispatch{ $flags{$_}} and $dispatch{ $flags{$_} }->($_) for ke +ys %flags;

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