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From: Peter Dimov (pdimov_at_[hidden])
Date: 2002-12-13 08:28:36

From: "Dave Gomboc" <dave_at_[hidden]>
> Conversion from T' to T is straightforward except when the value of type
> T' is nil. In this case, the developer may want to throw,
> default-construct the value of T, or assert.

I don't see why would anyone want a default-constructed T to be returned
when T' == nil, as a default-constructed T is perfectly storable in a T
variable, and there would be no need for T' at all.

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