>
> It is always better to post a complete, short, working program rather than a
> snippet.
>
Maybe this will make it more clear as to what I am trying to
accomplish. I simply want to test to see if @hours exists as a second
key in the hash of hashes %data.
If it does not print \t otherwise print the value of the hash.
Sorrry still trying to wrap my head around iterating through a nested
referenced hash.
Thank you,
Chris
#!/usr/bin/perl
use warnings;
use strict;
use Data::Dumper;
my %data =(
'149' => {
'05' => '1',
'06' => '1',
'00' => '1',
'01' => '2',
'03' => '2',
'04' => '2'
},
'077' => {
'05' => 'ND',
'06' => 'ND',
'00' => 'ND',
'01' => 'ND',
'02' => 'ND',
'04' => 'ND'
},
'078' => {
'05' => '1',
'06' => '1',
'00' => '1',
'01' => '1',
'02' => '1',
'03' => '1',
},
);
my $href = \%data;
my @wanted = qw(077 078 149);
my @hours = qw(00 01 02 03 04 05 06);
foreach my $cell ( @wanted ) {
print "$cell:";
foreach my $hr ( @hours ) {
if ( defined keys %{ $href->{$hr}}){
print "\t$href->{$cell}{$hr}";
}
else {
print "\t";
}
}
print "\n";
}
output:
Use of uninitialized value in concatenation (.) or string at
./example.pl line 46.
077: ND ND ND ND ND ND
Use of uninitialized value in concatenation (.) or string at
./example.pl line 46.
078: 1 1 1 1 1 1
Use of uninitialized value in concatenation (.) or string at
./example.pl line 46.
149: 1 2 2 2 1 1
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