std.reflection prototype

[Jacob Carlborg via Digitalmars-d]

On 2015-04-15 17:26, bitwise wrote:

> Right now, this is the def:
>
> /**
>   * Array of pairs giving the offset and type information for each
>   * member in an aggregate.
>   */
> struct OffsetTypeInfo
> {
>      size_t   offset;    /// Offset of member from start of object
>      TypeInfo ti;        /// TypeInfo for this member
> }
>
> If "string name" esd added, and then offTi[] esd actually populated,
> then I suppose you could do this:
>
> class Test {
>      int a = 4;
>      private int b = 5;
>      void print(){ writeln(b); }
> }
>
> void main()
> {
>      Test test = new Test;
>      // offsetof would instead come from the TypeInfo/OffsetTypeInfo
>      int* b = cast(int*)(cast(void*)test + Test.b.offsetof);
>      *b = 1234;
>      test.print();
> }
>
> But AFAIK, this is NOT ok in C++ because of the way inheritance works..
> is this safe in D?

I'm not sure, I would assume so. Why is this not safe in C++?

-- 
/Jacob Carlborg