Re: Simple const-related question

From:
James Kanze <james.kanze@gmail.com>
Newsgroups:
comp.lang.c++
Date:
Tue, 19 Feb 2008 02:15:36 -0800 (PST)
Message-ID:
<b6806ebe-886c-44a8-b83e-0c74635b6273@q78g2000hsh.googlegroups.com>
On Feb 19, 2:05 am, Jeff Schwab <j...@schwabcenter.com> wrote:

    [...]

MyObject* p1 = myFunction(); // p1 is non-const
const MyObject *p2 = myFunction(); // p2 is ???


Get out of the Java habit of putting () after the class name when
calling new. I'm pretty sure that "new Object();"


Allocates a default-constructed Object.

and "new Object;" do


Allocates a potentially uninitialized object, if Object is a POD type.

http://www.research.att.com/~bs/bs_faq2.html#malloc

I don't usually use the parentheses, either, but I guess I
probably should.


I don't usually use them either, because I learned C++ before
this distinction existed. But then, I don't usually dynamically
allocate objects which don't have a user defined constructor, so
it doesn't make a difference.

I also don't usually allocate objects directly with new.


What do you allocate them with, then?

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