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Date:      Fri, 5 Apr 1996 13:03:18 +1000
From:      Bruce Evans <bde@zeta.org.au>
To:        Brett_Glass@ccgate.infoworld.com, msmith@atrad.adelaide.edu.au
Cc:        hardware@FreeBSD.org, jkh@time.cdrom.com
Subject:   Re: Some solutions to disk problems.... I think.
Message-ID:  <199604050303.NAA13354@godzilla.zeta.org.au>

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>> Here's a suggestion.  Write a function that performs simple string
>> matching using a table of ten IDs.  Write ten functions which each parse
>> for these ID's.  Compare the size of the two.  Repeat the process for
>> twenty, and so on.

>I hope you are jesting! Only the most abysmal programmer would have to
>write ten functions to replace ten table entries.

You'll need the 10 entries at least in comments for checking.

>Seagate alone has several HUNDRED model numbers. In my hard disk guide,
>they go on for PAGES in fine print. And that's just one brand.  Recognizing
>substrings of different lengths, and knowing when to look for suffixes as
>well as the corresponding CDC and Conner model numbers, will be key to
>identifying drives efficiently.

An interesting problem! :-) Given a telephone book sized list of model
numbers, write an is_in_telephone_book(char const *s) function that is
significantly smaller than the strings for the model numbers.  If you
don't want to simply use a (compressed) table of the entries, then you'd
better start by writing test code to prove that there are no false
positive or false negative matches.

Bruce


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