how to compare 2 very large textfiles

Pete pete at mollysrevenge.com
Thu Oct 6 18:28:23 CDT 2011


Good point Jim.  As you say, it should work fine for fully qualified names.
 If the intent was to find duplicates as well as missing lines, then I would
"add 1 to myArray[i]["A"]" instead of putting true in there.  Then in the
final repeat loop check for "> 1" in each key to list duplicates.
Pete
Molly's Revenge <http://www.mollysrevenge.com>




On Thu, Oct 6, 2011 at 4:02 PM, Jim Ault <jimaultwins at yahoo.com> wrote:

> On Oct 6, 2011, at 5:50 PM, Matthias Rebbe wrote:
>
>  put the dgtext of grp "Festplatte 1" into tHDD1
>> put the dgtext of grp "Festplatte 2" into tHDD2
>>
>> REPEAT FOR each line i in tHDD1
>>    put true into myArray[i]["A"]
>> END REPEAT
>>
>> REPEAT FOR each line i in tHDD2
>>     put true into myArray[i]["B"]
>> END REPEAT
>>
>
> Major Caution:
>
> This technique only works robustly if every line in tHDD1 is unique
> and if every line in tHDD2 is unique
> since using    myArray [i] ["A"] would make duplicates within each list
> disappear.
> If your desired result is not affected by this, then the result will be
> correct.
>
> Path name comparisons are unique by their nature, but not all data sets
> are.
>
>
> Jim Ault
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