From: Peter Dimov (pdimov_at_[hidden])
Date: 2003-02-19 10:20:40
David Abrahams wrote:
> "Peter Dimov" <pdimov_at_[hidden]> writes:
>> It may be possible to use optional<T&> (is it supported?) or
>> optional< reference_wrapper<T> > but this looks like an "obfuscated
>> C++" entry to me compared to T*.
> Good point.
>> What's wrong with it? What does optional<T&> add?
> Suppose you have a
> variant<mpl::list<int&, std::string&> >
> How do you check to see if it contains an int&?
You don't. "int&" doesn't meet the variant requirements. Even if it did:
variant< int, int& > v;
How do you check to see if it contains an int&?
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