Re: vector assign
Frank Birbacher wrote:
Dar?o Griffo schrieb:
Daniel T. wrote:
BTW inheritance is not necessary.
I know, but since we program in OOP paradigm, it seems to me the
best way to do that.
No. It is not the best way although we have "OOP" at our disposal
(I think of "OOP" here as "derive from a base class"). A vector
makes no good base class. You must not derive from it. Value based
classes are usually not suited for inheritance. Think of a "long"
derived from an "int"!?
I guess you would have a real problem with the following then? :-)
template<class T> class Vec : public vector<T> {
public:
Vec() : vector<T>() { }
Vec(int s) : vector<T>(s) { }
T& operator[](int i) { return at(i); }
const T& operator[](int i) const { return at(i); }
}; //(1)
Seriously though, I do agree with you. Despite the citation of the above
source, I too think that such derivation is generally inappropriate.
Especially in this case because the assign(...) function would be useful
on several different containers, not just vectors so why limit its use
artificially?
That said, I see now that the functionality that the OP requested is
already in the vector class (as pointed out by James Kanze.)
(1) Stroustrup, Bjarne. "The C++ Programming Language (3rd ed.) 1997
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