Re: [boost] [serialization] fast array serialization (10x speedup)

From: Peter Dimov (pdimov_at_[hidden])
Date: 2005-11-24 11:24:10

David Abrahams wrote:

> To be fair, I haven't done the analysis: are you sure your approach
> doesn't lead to an MxN problem (for M archives and N types that need
> to be serialized)?

Yes, it does, in theory. Reality isn't that bad. For every M, the archive 
author has already added the necessary overloads for every "fundamental" 
type that supports optimized array operations. This leaves a number of 
user-defined types n (because the number is smaller than N), times M.

In addition, even if the author of an UDT hasn't provided an overload for a 
particular archive A, the user can add it himself. The m*n number for a 
particular codebase is bounded, and the overloads are typically one-liners.

Looking at

http://lists.boost.org/Archives/boost/2005/11/97002.php

the difference is that you have a "please call ar.load_array" specializable 
predicate instead of a "please overload this function" customization point. 
Is this the latest version of the proposed design?