On 12/20/2010 8:10 AM, Maxim Yanchenko wrote:
Hi all,
I see there going to be breaking changes in Proto and Phoenix (like contexts
must go, visitors etc).
I don't think there will be massive breaking changes anytime soon. I
/might/ deprecate contexts, but I doubt I could remove them. Too many
people use them. Someday I might come out with a completely different
C++0x version of Proto with significant breakages, but until then, I
think you're safe.
And I might not even deprecate contexts. A week ago I tried porting
Proto's examples from contexts to transforms and found they got
significantly more complicated. I don't have any definite plans wrt
contexts and transforms yet.
So the question is: for a beginner who just started to learn Proto, which
parts
of Proto should be studied now and which are likely to be dropped/changed?
Just
to avoid wasting time learning something deprecated.
Despite the fact that they're simpler for some things, I'd say avoid
contexts. They won't get you as far as transforms.
P.S. Eric, there is a bug in proto::display_expr, I wrote about it (and
posted a
patch) in comments to your Playing with syntax article on cpp-next, could
you
please take a look when you have time?
I just committed a fix to trunk. Thanks for bringing this to my attention.
--
Eric Niebler
BoostPro Computing
http://www.boostpro.com
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