[boost] Re: [optional]output

From: David Abrahams (dave_at_[hidden])
Date: 2005-03-08 13:22:41

"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.

-- 
Dave Abrahams
Boost Consulting
www.boost-consulting.com