On 28.05.2005 04:16, "Scott Lahteine" <email@hidden> wrote:
> virtual void InsertCopyBefore(UInt16 index, const T** elemPtr,
> UInt16 count=1)
<...>
> inline void InsertCopyBefore(UInt16 index, const TObjectArray<T>
> &src) { InsertCopyBefore(index, src.m_array, src.Size()); }
>
>
> The last method is the one that gets the error in gcc4:
>
> TArray.h:418: error: invalid conversion from 'FPChordGroup** const'
> to 'const FPChordGroup**'
> TArray.h:418: error: initializing argument 2 of 'void
> TObjectArray<T>::InsertCopyBefore(UInt16, const T**, UInt16) [with T
> = FPChordGroup]'
>
>
> But I'm probably misunderstanding the concept of constness in some way.
The issue here is that a pointer to a const object is different from a
const pointer to an object (or from a const pointer to a const object). You
are trying to pass a const pointer as a pointer to a const object, and the
compiler rightfully complains.
> What changes can I make to my code so that this error won't occur and
> yet maintain the const-ness of that argument?
Without knowing more about the architecture of your application, I'd say
that the best approach would be to use STL rather than a custom container. A
few days ago, the options were discussed on this list (search for a message
from Howard Hinnant).
As an immediate fix, you may try to declare m_array mutable.
- WBR, Alexey Proskuryakov
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