Re: [boost] [function_types] Number of default parameters

AMDG On 2/8/2011 5:38 PM, Lorenzo Caminiti wrote:

Is there a way to determine at compile-time the number of parameters with default values from a function type?

For example, can I program the following `count_defaults` metafunction?

count_defaults< bool(*)(int x, int y)>::value // == 0 count_defaults< bool(*)(int x, int y = 1>::value // == 1 count_defaults< bool(*)(int x = 2, int y =1)>::value // == 2

(If this is possible, it could be added to Boost.FunctionTypes.)

No. The default parameters are not part of the type. In Christ, Steven Watanabe