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From: Joel de Guzman (joel_at_[hidden])
Date: 2005-03-08 22:59:29

David Abrahams wrote:
> "Peter Dimov" <pdimov_at_[hidden]> writes:
>>Gennadiy Rozental wrote:
>>>I believe this version is much less intuitive. optional<T> v is still
>>>value of type T which may or may not be present. Accordingly when we
>>>print it we print the value if it present or print nothing if it not.
>>This isn't very useful. The output cannot be read back, and when printing a
>>sequence of optionals much of the information is lost.
> Agreed. I was going to say that an empty optional should print
> something, but couldn't articulate the reasons. Thanks.

Perhaps do as the tuples do?

     [123] <- a non-empty optional<int>
     [] <- an empty optional<T>


Joel de Guzman

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