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Re: AW: Hash of Hashes

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From:
Uri Guttman
Date:
September 29, 2009 08:48
Subject:
Re: AW: Hash of Hashes
Message ID:
87tyylbvma.fsf@quad.sysarch.com
>>>>> "SD" == Soham Das <sohamdas@yahoo.co.in> writes:


  SD> Lets assume, the hash of hash being a record of something which
  SD> has already happened and hence we know the final value, not
  SD> something which is right now happening, i.e changeable.

you keep swapping hash and array concepts, words and symbols. please
learn to keep them separate or your perl life will be hell. hashes have
no concept of 'final value' as an array would. maybe you mean the hash
is finalized and won't be changed anymore. if so then say that.

  SD> In my case, its like

  SD> $Position{$Scrip}{$Date}= #some value 

  SD> That is, my position in a previous date $Date, in the stock
  SD> $scrip, was some integer. Thanks for the correction, regarding the
  SD> brackets. I stand corrected and it seems I have made a lot of such
  SD> mistakes apparent in the previous two three mails.

hashes have no positions, just keys. again. try to use standard
terminology or you won't convey any proper meaning here. programming
requires this to be accurate. and yes, you have been making a bunch of
hash/array mistakes and you must fix that in your head. they are similar
in syntax styles in some ways (e.g. [] vs {}) but very different in
semantics and terminology.

uri

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