[C++-sig] Re: implicitly_convertible

[David Abrahams]

"aashish" <aashish at vrac.iastate.edu> writes:

> Hi, 
>
> This might be a very simple question but I am wondering when I should use 
>
> implicitly_convertible as I found that in certain cases the coversion from
> Python type to C++ type is possible without using it. 

implicitly_convertible isn't there just to enable Python->C++
conversions.  Many built-in conversions work automatically.

if there exists a conversion from  Python type P -> C++ type C 

implicitly_convertible<C,D>();

will enable a conversion from Python type P -> C++ type D 

-- 
Dave Abrahams
Boost Consulting
www.boost-consulting.com