operator inheritance from a class template???

[jmborr]

Hi all,
For some reason, my derived class does not inherit the operator '=' of my base class, which is a class template, when I compile with g++
//=========== base class
template<class T>
class vec{
public:
vec &operator=( vec ) ;
};
//=========== derived class
class vec_d : vec<double> {
};
//===========

When I compile, I have the following error:
no match for `vec_d& = vec<double>' operator
candidates are: vec_d& vec_d:perator=(const vec_d&)

Any ideas, please???
jose,

 

[ArkM]

Strictly speaking, it's doubtful what is the better:

vec_d x, y;
...
x = y; // your vec& =(vec) or implicit vec&=(const vec&)?

Keep it simple, simply redefine a normal assignment:

&vec operator=(const vec&)

 

[Cagliostro]

opeartor = is not inherited

Ion Filipski

 

[jstreich]

operator= is, but not all uses of the operator call the operator= function... If it's a new object, it's the coy constructor

vec_d x = somevar; //copy constructor

...

vec_d x;
x = somevar; //operator=

redefinition is the better solution (and you can wrap a call to the parent's operator= if need be).