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Postings from July 2005
## Bon jour.
## Just for clarity: What is your distinction between "domain" and
"name"?
## "Domain" the first two levels, and the rest "name"??
## Well, I thought it over; if you have just one hash entry
## '64.207.97.183' => www.nigeria.gov.ng
## and you put it into your hash:
$H{ '64.207.97.183'}{ng}{gov}{nigeria}{www}='is read';
## then both the tests
print "www.nigeria.gov.ng\n" if exists $H{
'64.207.97.183'}{ng}{gov}{nigeria}{www};
print "nigeria.gov.ng\n" if exists $H{'64.207.97.183'
}{ng}{gov}{nigeria};
## will be true, allthough you did not yet have an entry
## '64.207.97.183' => nigeria.gov.ng (without "www.")
print "----------------------------------\n";
## And, even worse, if later you have this domain
## '64.207.97.183' => nigeria.gov.ng (without "www.")
## and you enter it into your hash like this:
$H{ '64.207.97.183'}{ng}{gov}{nigeria}='is read';
## then
print "www.nigeria.gov.ng\n" if exists $H{'64.207.97.183'
}{ng}{gov}{nigeria}{www};
## will no longer hold true.
print "----------------------------------\n";
###########################################
## Try this, add a hash entry "{is_read}":
$H{'64.207.97.183'}{ng}{gov}{nigeria}{www}{is_read}=1;
$H{'64.207.97.183'}{ng}{gov}{nigeria}{is_read}=1;
## If you test:
print "nigeria.gov.ng\n" if exists
$H{'64.207.97.183'}{ng}{gov}{nigeria}{is_read};
print "www.nigeria.gov.ng\n" if exists
$H{'64.207.97.183'}{ng}{gov}{nigeria}{www}{is_read};
## these tests work as desired.
## Right?
## And one remark:
## To me it seems a good style to post such a task as a small typical
perl script, maybe one can play around and test and solve the problem.
## Au revoir,
## Detlef