Acessing an array element in a hash

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Re: Acessing an array element in a hash by dragonchild (Archbishop) on Mar 26, 2003 at 15:23 UTC
`@{$key_hash{$key}{$oid}[0]}` is an array. You can tell that by the '@' on the left. You're close, those. You just need to go one more level deep. `$key_hash->{$key}{$oid}[0][1]` will do you just nicely. ------ We are the carpenters and bricklayers of the Information Age. Don't go borrowing trouble. For programmers, this means Worry only about what you need to implement. Please remember that I'm crufty and crochety. All opinions are purely mine and all code is untested, unless otherwise specified.	[reply] [d/l] [select]
Re: Acessing an array element in a hash by Mr. Muskrat (Canon) on Mar 26, 2003 at 15:25 UTC
This is the third or fourth time that a similar post was made by an Anonymous Monk. It would be so much easier for you to get assistance if you would sign up for an account. Added: See also Determining duplicate array elements & Array elements in a hash.	[reply]
Re: Acessing an array element in a hash by artist (Parson) on Mar 26, 2003 at 15:27 UTC
Missing Lines: `my %key_hash= %{$VAR1}; $key = 'response_1.3.6.1.2.1.2.2.1.12.27'; $oid = '1.3.6.1.2.1.2.2.1.12.27';` [download] And now the code which should give you '1' `print $key_hash{$key}{$oid}[0]->[1];` [download] Possible Error Detection: `$key_hash{$key}{$oid}[0]` contains a single reference to an Array. So your code `print "@{$key_hash{$key}{$oid}[0]}\n";` [download] dereference it and prints the entire array. Above suggested code just prints '1' as the 2nd element of that dereferenced array'. artist	[reply] [d/l] [select]
Re: Re: Acessing an array element in a hash by Anonymous Monk on Mar 26, 2003 at 15:38 UTC
Thanks guys, A simple mistake as always, and yes Mr_Muskrat I should and will be opening an account.	[reply]
Re: Acessing an array element in a hash (that time) by tye (Sage) on Mar 26, 2003 at 17:44 UTC
It's been a while, so I'll note that references quick reference can be very valuable in making it much easier to remember how to solve problems like this. - tye	[reply]
Re: Acessing an array element in a hash by Tomte (Priest) on Mar 26, 2003 at 15:21 UTC
Edit:Silly me, dragonchild is right and I should read what I write, not just copy & paste; corrected that character :-) As far as I understand this on a first glance, you're printing an array, so thats normal behaviour you're showing (assuming I'm right on my assumptions on what values `$key_hash, $key, $oid` carry). I guess you want to access element 1 in the nested array you're dereferencing with something like @`${$key_hash{$key}{$oid}[0]}[1]` to get to the `1`. regards, tomte	[reply] [d/l]
Re2: Acessing an array element in a hash by dragonchild (Archbishop) on Mar 26, 2003 at 15:23 UTC
No. That's an array-slice. q.v. my reply in this thread to see the correct answer. ------ We are the carpenters and bricklayers of the Information Age. Don't go borrowing trouble. For programmers, this means Worry only about what you need to implement. Please remember that I'm crufty and crochety. All opinions are purely mine and all code is untested, unless otherwise specified.	[reply]
Re: Acessing an array element in a hash by OM_Zen (Scribe) on Mar 26, 2003 at 16:43 UTC
Hi The code to populate the hash assuming is like the below , you can access the elements of the array of the hash of the hash like this `my $ascalar = { 'a' => {'a' =>'valueofhashofhash', 'hashinsideahash' => [1, 'secondelementofarrayofsecondhash']}}; print "[$ascalar->{'a'}->{'hashinsideahash'}[0]]\n"; print "[$ascalar->{'a'}->{'hashinsideahash'}[1]]\n"; __END__ [1] [secondelementofarrayofsecondhash]` [download]	[reply] [d/l]