Re: [boost] [xint] Third release is ready, requesting preliminary review

Subject: Re: [boost] [xint] Third release is ready, requesting preliminary review
From: Chad Nelson (chad.thecomfychair_at_[hidden])
Date: 2010-05-01 14:27:43

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On 05/01/2010 02:08 PM, Marius Stoica wrote:

>> That would simplify things a great deal. I've never tried it
>> though... an extra 130K of headers in every source code file that
>> uses the library is a little much, isn't it?
> 
> I don't think that's an issue. Most(almost all) of that code is 
> conditionally compiled and the final size of what would end up in a
> binnary will be very small.

It's still code that would have to be read and parsed for every
compilation unit that includes it. Computers are a lot faster these days
than when I learned to program, but that's still enough to make me think
twice before doing something like that.

> Also let me check some of the other libraries in boost.
>
> Here in alphabethic order (Afaict all of these are header only)
> accumulators - 506k
> algoritm - 305k
> archive - 395k
> asio - 1.5MiB
> assign - 95k
> bitmap - 488k
> bind - 177k

I've used a few of those, and haven't noticed a major compile-speed
problem, which is an argument in your favor.

> Also because ubuntu screwed up their boost doesn't mean that all 
> distros will. The default compiled behaviour should be the one that
> works in all cases not the one that's faster imho.

I'm sorry to say that my opinion differs. If someone is evaluating the
library against several others to see which one he wants to use, he's
not likely to dig into the documentation to figure out how to get the
best speed out of it -- he's going to compare the default
configurations. I'd like XInt to still be in the running when he does.

Also, multithreaded operation is still fairly uncommon. I'd hate to make
everyone pay for something that only a few need, especially when the
speed cost is so high (the single-threaded version is *twice* the speed
of the multithreaded one).
- -- 
Chad Nelson
Oak Circle Software, Inc.
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