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From: Fernando Cacciola <fernando.cacciola@gmail.com>
Newsgroups: gmane.comp.lang.c++.isocpp.proposals
Subject: Re: optional<T>, one more value or two states
Date: Thu, 24 Jan 2013 17:07:21 -0300
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On Thu, Jan 24, 2013 at 12:22 PM, Andrzej Krzemie=F1ski
<akrzemi1@gmail.com> wrote:
>
>
> W dniu czwartek, 24 stycznia 2013 14:52:22 UTC+1 u=BFytkownik Zhihao Yuan
> napisa=B3:
>>
>> On Thu, Jan 24, 2013 at 7:38 AM, Ville Voutilainen
>> <ville.vo...@gmail.com> wrote:
>> > I have since cured that problem in my head, there's no 'danger' involv=
ed
>> > in
>> > it.
>>
>> The danger already shows up.
>>
>> Quoting from the proposal:
>>
>>   "Such implicit conversions impose some risk of introducing bugs,
>>    and in fact in order to avoid one such possible bug we had to 'poison=
'
>>    comparisons between optional<T> and T."
>>
>> And a carefully specified comparison logic is under discussion.
>
>
> The perceived danger is the opinion of the authors (myself included).

To be honest, it is more that I was sold into it :)

Again if it where entirely up to me, I would put this back in as well
as mixed comparison operators.

So, it's once a again more of a matter of gauging the probable
reaction among voting committee members.

--
Fernando Cacciola
SciSoft Consulting, Founder
http://www.scisoft-consulting.com

--=20

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