John W. Krahn wrote:
Noah wrote:
response inline below
John W. Krahn wrote:
Noah wrote:
I have a routine returning a perl reference and I am trying to
figure out how to properly use the hash tables in the main section
of my perl proggie.
--- from the main program
my $templateConfiguation =
&readConfigTemplate($templateConfigFilename,
$sortedTemplateConfigFilename);
.... and later on how do I properly use the hash
$templateConfiguation ....
} else {
print DIFF "d> $key" if !exists
($templateConfiguation{$templateType}{$key});
print MATCH "m> $key" if exists
($templateConfiguation{$templateType}{$key});
if ( exists $templateConfiguation->{ $templateType }{ $key } ) {
print MATCH "m> $key";
}
else {
print DIFF "d> $key";
}
okay so I get a peculiar error message that I am not sure how to correct:
Can't use string ("") as a HASH ref while "strict refs" in use at
./compare.configs.pl line 900.
--- line 900 to line 904 ---
if (exists $templateConfiguation->{$templateType}{$key}) {
print MATCH "m> $key";
} else {
print DIFF "d> $key";
}
That means that either $templateConfiguation or
$templateConfiguation->{$templateType} has a value of "" and not a hash
reference.
Okay I see why $templateConfiguration is defined inside a for loop. how
can I make sure the referenced hash that is returned inside the for loop
is passed to the main portion of the program.
Here is the for loop.
--- snip ---
foreach my $templateConfigFilename (@templateConfigFilenames) {
$templateConfigFilename = "$TemplateDirectory/$templateConfigFilename";
(my $sortedTemplateConfigFilename = $templateConfigFilename) =~
s/.(configuration.txt)/.sorted-$1/;
push (my @sortedTemplateConfigFilenames,
$sortedTemplateConfigFilename);
# go read template files and save as sorted
my $templateConfiguation =
&readConfigTemplate($templateConfigFilename, $sortedTemplateConfigFilename);
}
---- snip ---
John
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