const member initialisation

[dean]

Hi guys,
suppose I have a set of instance variables declared as const double, I would like to initialise them in the constructor.
Besides of initalising in the ctor list (e.g. MyClass() : my_const_var(0), my_const_var2(init_var2()), etc.. { }), is there any way to set their value inside the constructor body ?

regards
-s.fox

[Moschops]

Edit: Ignore me - didn't spot that the OP specified const.

[Peter87]

They have to be initialized in the ctor init list. After that you can't give them a value because they are const.

[vlad from moscow]

No, inside the constructor body you may not iniialize them because there is used an assignment instead initialization.
However you can declare them as constexpr static variables and assign them values in the class definition. For example

struct A
{
   static constexpr double x = 1.0;
};

[dean]

oky thanks guys