Re: Casting question

Eames, Andrew wrote:
> The problem is that although B derives from A, B[] does *not* derive
> from A[]

While B[] doesn't actually derive from A[], there is array covariance.
It's perfectly possible to pass write a method Gimme which returns A[]
but which allows B[] b = (B[])Gimme(5); to run without problems.

The problem is that array covariance doesn't actually change the type of
the array - an A[] isn't necessarily a B[] any more than an A is
necessarily a B. You can treat a B[] as an A[], however.

Jon

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