On 10/1/11 8:57 AM, Krzysztof Żelechowski wrote:
I use the following function on a regular basis:
template< class P_T> P_T const&same (P_T const&p) { return p; }
I use it for two purposes:
1. to pass an identity function to an API that expects a unary function, 2. to help the compiler identify the right chain of type conversions.
The standard uses static_cast for (2), which could be used but it disables some compile-time verification so I would rather not use static_cast when not absolutely necessary.
I have been unable to find a corresponding feature in Boost (although the value factory comes close). Do you think adding such a function to Boost utilities would be worthwhile?
Chris
That sounds basically like implicit_cast<T>(), which is in implicit_cast.hpp