-----Original Message----- On Behalf Of David Abrahams Sent: Friday, June 17, 2005 7:47 AM "Brian Braatz" <brianb@rmtg.com> writes:

...

There is a common mental pattern that occurs:

"Hmm.. there SHOULD be a SIMPLE way to do X." (flip through MPL book, MPL ref manual, google boost archives, write sample code) "Hmm.. Ok I can see there maybe a way to do this COMPLETELY from scratch, but I am not totally certain I need to do that. I need to keep looking. There probably is a clever one liner to solve the problem"....

Your advice was EXACLY what I needed. (i..e how to THINK about the solution)

THANK YOU

You're welcome. If you wouldn't mind writing up the answer for the wiki, that would be awesome. Not sure where it should go; neither

http://www.crystalclearsoftware.com/cgi-

bin/boost_wiki/wiki.pl?CPP_Template_Metaprogramming_Book_-_Answers_Page

nor

http://www.crystalclearsoftware.com/cgi- bin/boost_wiki/wiki.pl?Effective_MPL

seem to be quite right.

-- Dave Abrahams

[Brian Braatz Writes:] After the following is resolved: (both the thread I am responding to and the link below are 2 halves of the same problem) http://tinyurl.com/8xup5 I will be able to take a vector<>- go through a set<> and "return" a vector with all duplicate types removed. Once I have a final solution to this, I will post the full code (again for people searching the archives looking to solve the same problem) Thinking along the same lines as David, here is my suggestion: * We create a MPL FAQ page on the Wiki (or is there one I could not find?) * this way when users bump into a problem, we can post the solution to the FAQ * it might be a good idea to ask people to post it to THIS LIST first, otherwise the FAQ may end up with ill formed samples Thoughts? I would be happy to put the first entry in the Wiki FAQ page if we can get one created. (i.e. "How do I remove all the duplicate types from a sequence?") Also- I would add that using mpl::for_each<> while covered in the MPL book, would be a good entry to also have in there. (I would be happy to add an wiki entry referencing the book). Something like "How to I print all the types in a sequence?" as the question. some other ideas: (for entries) * "How do I call decide to call a method on a class based on it's type" * "How do build a library like boost.function<>, with a variable number of arguments? How do I do this in such a way as to support older compilers?" The basic idea is that the Question is listed, then the answer is listed. Then references to follow up information is listed. (i.e point them back to the MPL reference manual or the MPL book) what do you guys think?