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From: Sohail Somani (sohail_at_[hidden])
Date: 2008-06-22 21:07:08

David Abrahams wrote:
> Sohail Somani wrote:
>> Ioannis Papadopoulos wrote:
>>> Hi,
>>> Is there any means of obtaining how big my archive will be before
>>> actually serializing? Something like a special boost::archive that
>>> will count the size of what I'm serializing. I'm mainly concerned on
>>> allocating exactly the space I'll be needing for binary_oarchives.
>>> I guess I should follow the SA concept (since I'm trying to find the
>>> size before saving) but how can I know any extra overhead?
>> As others have mentioned, the only real way to do this is to effectively
>> serialize twice. Once to count, once to do the the actual serialization.
>> Out of curiosity, why do you need to do this?
> FWIW, I used to use that tack when I needed a progress bar for long file
> save operations. Worked a treat.

Who would have thought? An accurate progress bar! Crazy talk. Nice
application though!

Sohail Somani

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