Re: [boost] [Boost-bugs] [ boost-Bugs-1617058 ] doc of placeholer expression requirements incomplete

From: Larry Evans (cppljevans_at_[hidden])
Date: 2006-12-16 11:49:46

On 12/16/2006 10:23 AM, SourceForge.net wrote:
> Bugs item #1617058, was opened at 2006-12-16 10:23
> Message generated for change (Tracker Item Submitted) made by Item Submitter
> You can respond by visiting: 
> https://sourceforge.net/tracker/?func=detail&atid=107586&aid=1617058&group_id=7586
[snip]
> Initial Comment:
> he 3 expression requirements on:
> 
> http://www.boost.org/libs/mpl/doc/refmanual/placeholder-expression.html
> 
> make no mention that X should have a nested
> type typedef.  IOW, X must be a metafunction
> as defined here:
> 
> http://www.boost.org/libs/mpl/doc/refmanual/metafunction.html
> 
> However, I believe it should since I'm
> getting compile-time error messages
> without the nested typedef.

The tuple_methods_proto.cpp in <boost-vauilt>/Template Metaprogramming
demonstates the problem.