[Boost-users] [call_traits] call_traits<enum>::param_type is const reference

From: Sergei Politov (spolitov_at_[hidden])
Date: 2008-02-23 15:00:59

As I can see, call_traits for enum
types defines param_type as const reference.
I cannot find a reason for it.
It is possible to use is_enum to determine whether type is enum or not, and
define param_type for enums similar to value_type.

Could anybody describe the situation?