Re: Re: Counting Elements output from Data::Dumper

my $length=scalar @$config;
print $length;
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Returns an Invalid Server Error

my $length=scalar %$config;
print $length;
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Returns 1/8, I'm really not sure what that refers to, can you give me some more enlightenment?

--
paul

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Re: Re: Re: Counting Elements output from Data::Dumper by robartes (Priest) on Nov 09, 2002 at 19:01 UTC
Hi, the reason you get an error on `scalar @$config` is that I goofed :). I missed a level in the data structure referenced to by $config: it's actually a HoAoH (hash of arrays of hashes). So, to get the length of LOGENTRY, you need to access the value of the LOGENTRY key in the hash referenced by $config, and all that in scalar context. In other words: do what LTjake said :). `print scalar %$config` This is funny - what's happening here is that you're accessing a hash in scalar context ($config is a hash reference, so %$config is a hash. `scalar` puts it in scalar context.). This gives you the bucket efficiency of the hash, which is pretty useless in your case. Sorry for the goof-up. CU Robartes-	[reply] [d/l] [select]

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Re: Re: Re: Counting Elements output from Data::Dumper
by robartes (Priest) on Nov 09, 2002 at 19:01 UTC

the reason you get an error on scalar @$config is that I goofed :). I missed a level in the data structure referenced to by $config: it's actually a HoAoH (hash of arrays of hashes). So, to get the length of LOGENTRY, you need to access the value of the LOGENTRY key in the hash referenced by $config, and all that in scalar context. In other words: do what LTjake said :).

print scalar %$config This is funny - what's happening here is that you're accessing a hash in scalar context ($config is a hash reference, so %$config is a hash. scalar puts it in scalar context.). This gives you the bucket efficiency of the hash, which is pretty useless in your case.

Sorry for the goof-up.

CU
Robartes-

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