Initializing a class pointer
Simen kjaeraas
simen.kjaras at gmail.com
Sat Feb 26 15:10:42 PST 2011
Tyro[a.c.edwards] <nospam at home.com> wrote:
> class Class{}
>
> void main()
> {
> Class myClass;
> Class* pClass0 = &myClass; // OK
>
> Class* pClass1 = new Class; // Error: cannot implicitly convert [8]
> // expression (new Class) of type t.Class
> // to test.Class*
>
> Class* pClass2 = &(new Class);
> // Error: new Class is not an lvalue [12]
>
> Class mClass = &(new Class);// Error: cannot implicitly convert [14]
> // expression (&new Class) of type Class*
> // to test.Class
> }
>
> C++ uses the process on line [8] above to initialize a class pointer.
> Obviously it does not work in D. But given the error message at [14], I
> thought [12] would have been allowed. What is the proper way to convert
> [8] to D?
Classes in D are already references (like Class& in C++), thus line [8]
would be a pointer to a reference to a class, something which may make
some kind of sense, but is unlikely to be what you want.
Perhaps this question is better answered if you explain why you want a
pointer to a class?
--
Simen
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