Unary predicate for shared_ptr == 'real' pointer?

From: dick.bridges_at_[hidden]
Date: 2003-04-11 13:53:33

This is probably more of a C++ than an boost question but, since it
involves shared_ptr, I thought I'd try it here first.  I've got a vector of
shared_ptrS (e.g., vector<shared_ptr<T> > v;) and I need to find the entry
given the 'real' pointer to the underlying T.  Looping thru the vector like
this:

<snippet>
for( vector<shared_ptr<T>::iterator itr = v.begin(); itr != v.end(); itr++)
{
    if( itr->get() == real_this){...}
}
</snippet>

works but seems klunky.  I should be able to use [find_if( v.begin(), v.end
(), ???)] but I can't work out the predicate.  Any help or "pointers" ;)
will be greatly appreciated.

TIA