[boost] [proto] new version, breaking changes

From: Eric Niebler (eric_at_[hidden])
Date: 2008-01-22 21:41:35

I've just uploaded proto v3 to the file vault 
(http://www.boost-consulting.com/vault/index.php?directory=Template%20Metaprogramming). 
  Proto is a toolkit for implementing domain-specific embedded languages 
in C++ using expression templates.

The new version has a completely rewritten set of transforms that are 
incompatible with the old transforms, so this is a breaking change. You 
can read all about the new transforms here:

http://boost-sandbox.sourceforge.net/libs/proto/doc/html/boost_proto/users_guide/expression_transformation.html

The short story is that transforms are now simply TR1-style function 
objects, and they can be composed using function types (the so-called 
"round lambda" syntax), making expression tree transformations readable 
and concise.

-- 
Eric Niebler
Boost Consulting
www.boost-consulting.com