Re: [Boost-users] (offlist) Using boost::lamba with a vector of shared_ptr's

21 Nov 2003


      On Fri, 21 Nov 2003, Peter Dimov wrote:
...
Hi,
Jaakko Jarvi wrote:
...
...
The second alternative doesn't work since Lambda doesn't support *_1
for shared_ptr.
In particular, Lambda's return type deduction templates are not aware
of shared_ptr.
They do not need to be aware of shared_ptr. shared_ptr provides
::element_type, for consistency with std::auto_ptr. boost::shared_ptr also
has ::reference, although tr1::shared_ptr might not. You just need to look
for the individual typedef and not instantiate iterator_traits prematurely.
Ok, thanks. In any case, lambda's return type deduction rules do
not cover the convention of ::element_type.

  Jaakko