Re: [Boost-users] [parameter] Parameter-Enabled Class Templates: combining keyword and deduction for the same parameter

on Thu Jul 19 2007, Joaquín Mª López Muñoz wrote:

The docs explain that a parameter can be named:

typedef parameter::parameters< requiredtag::threading_policy ...

...

class_signature; ... class_,...>;

or else be deduced:

typedef parameter::parameters< required< deducedtag::threading_policy, is_base_and_derived > ...

...

class_signature; ... class multithreaded: threading_policy_marker{...}; class_;

Now, is it possible to combine these two options into one, so that the the two syntaxes

class_,...>; class_;

are accepted? If so, how?

Just used deducedtag::threading_policy; deduced parameters can be deduced from argument types or from the names attached to named arguments. -- Dave Abrahams Boost Consulting http://www.boost-consulting.com The Astoria Seminar ==> http://www.astoriaseminar.com