From: Joel de Guzman (joel_at_[hidden])
Date: 2004-11-24 20:28:57
Darren Cook wrote:
>> Hi. Here's a preview of Phoenix V2. ...
>> You can browse the draft docs here:
> Hi Joel,
> It looks interesting. I've only read the Starter Kit page so far. You
> went from this (without using the library):
> find_if(c.begin(), c.end(), &is_odd)
> find_if(c.begin(), c.end(), is_odd(arg1));
Actually, it's this:
return arg1 % 2 == 1;
find_if(c.begin(), c.end(), &is_odd)
find_if(c.begin(), c.end(), arg1 % 2 == 1)
You seem to have missed that. It's easy to miss because it's shorter.
> But your functor is a lot longer, and the advantage wasn't explained (or
> perhaps what I mean is that the advantage of lazy evaluation wasn't
> explained or demonstrated here).
> Is it any quicker to run? If the advantage is that you get better
> re-use, then I think you need a follow-on example that shows that
> re-use, and how that wouldn't be achieved with normal c++ functors.
I can't explain eveything in the starter kit. It's explained in
latter parts of the doc: http://tinyurl.com/6kpcn. The starter
kit is meant to be as concise as possible.
However, the fact that you mentioned it makes me want to improve
on it. Any suggestion is very welcome.
-- Joel de Guzman http://www.boost-consulting.com http://spirit.sf.net
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