On 23/11/10 17:20, Eric Niebler wrote:
On 11/23/2010 10:19 AM, Joel Falcou wrote:
So, question is: is there a way to have an extensible list of
when<pattern,rule> that can be extended "from the outside", something
like a proto::switch_ but with patterns instead of tag ?
No. The best you can do is document how to define a new Proto algorithm
from an old one:
struct Old : proto::or_< ...> {};
struct New : proto::or_< my_stuff, Old> {};
Now everywhere in your library that you have the Old algorithm
hard-coded, you need to make it a template parameter so that your stuff
can be used with an extended algorithm.
Can't the new extrnal_transform be of any help ?
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