comparing two lists, ndiff performance

[Zbigniew Braniecki]

bearophileHUGS at lycos.com wrote:
> Zbigniew Braniecki:
>> Is there a way to speed it up? Any easier way? Faster method?
> 
> This problem is a bit messy. Maybe it's better to sidestep the
> problem, and not use a list, and create an object that wraps the list,
> so it always keeps an updated record of what changes are done... but
> you have to notify it if you change the objects it contains.

That would be sweet... But I rarely will have it on the plate.

In most cases I will load the two l10nObjects from the files and then 
I'll have to compare them in the way described above.

So it's something like compare-locales or compare-l10n-directories 
script in the easiest form.

and it'll be launched in the pessimistic case on around 40 locales each 
of them made of ~800 l10nObjects.

I'll probably leave two methods. The faster for automated scripts which 
just have to catch changes and report that the file needs an update, and 
a detailed one for presenting it to the user.

I was just thinking that there maybe exists a smart, fast, powerful 
method that would eliminate use of ndiff to compare two lists.

Thanks for help!

Greetings
Zbigniew Braniecki