I'm working with some C++/CLI code (new syntax) and am trying to declare a generic type and want to set a member variable to it's default.
In C#:
class Class&l开发者_如何学运维t;T>
{
T member = default(T);
}
What's the equivalent in CLI?
generic<typename T> public ref class Class
{
public:
Class() : member(default(T)) // <-- no worky
{
}
private:
T member;
};
Interestingly enough the syntax makes it looks like this: T()
. It does require the addition of a copy constructor.
generic<typename T>
public ref class Class
{
public:
Class() : member(T())
{
}
Class(Class^ c)
{
member = c->member;
}
private:
T member;
};
Edit DOH This works too (been in C# land for so long I forgot that NULL and 0 are the same thing in C++, hence no need for different value and reference type default values):
generic<typename T>
public ref class Class
{
public:
Class() : member(0)
{
}
Class(Class^ c)
{
member = c->member;
}
private:
T member;
};
But isn't the private member already initialized with the default constructor?
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