Comments on: Call a constructor or allocate an object in-place http://www.alexonlinux.com/call-a-constructor-or-allocate-an-object-in-place-2 Sun, 05 Feb 2012 21:17:46 +0000 hourly 1 http://wordpress.org/?v= By: [Forwarded] how encapsulation, inheritance, polymophism work in C++ | riding in tech world. http://www.alexonlinux.com/call-a-constructor-or-allocate-an-object-in-place-2/comment-page-1#comment-27713 [Forwarded] how encapsulation, inheritance, polymophism work in C++ | riding in tech world. Mon, 14 Nov 2011 07:30:02 +0000 http://www.alexonlinux.com/?p=1803#comment-27713 [...] Call a constructor or allocate an object in-place [...]<div class="comment-remix-meta"><a href="#" class="replyto" onclick="replyto('27713','[Forwarded] how encapsulation, inheritance, polymophism work in C++ | riding in tech world.'); return false;">Reply</a> - <a href="#" class="quote" onclick="quote('27713','[Forwarded] how encapsulation, inheritance, polymophism work in C++ | riding in tech world.','[...] Call a constructor or allocate an object in-place [...]'); return false;">Quote</a></div> [...] Call a constructor or allocate an object in-place [...]
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]]> By: Alexander Sandler http://www.alexonlinux.com/call-a-constructor-or-allocate-an-object-in-place-2/comment-page-1#comment-24062 Alexander Sandler Thu, 29 Jul 2010 17:58:56 +0000 http://www.alexonlinux.com/?p=1803#comment-24062 <a href='#comment-24049' rel="nofollow">@Hander</a> One of the reasons is to ease memory management. It is much easier to allocate large pools of memory and then allocate objects on the pool.<div class="comment-remix-meta"><a href="#" class="replyto" onclick="replyto('24062','Alexander Sandler'); return false;">Reply</a> - <a href="#" class="quote" onclick="quote('24062','Alexander Sandler','<a href=\'#comment-24049\' rel=\"nofollow\">@Hander<\/a>\r\nOne of the reasons is to ease memory management. It is much easier to allocate large pools of memory and then allocate objects on the pool.'); return false;">Quote</a></div> @Hander
One of the reasons is to ease memory management. It is much easier to allocate large pools of memory and then allocate objects on the pool.
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]]> By: Alexander Sandler http://www.alexonlinux.com/call-a-constructor-or-allocate-an-object-in-place-2/comment-page-1#comment-24061 Alexander Sandler Thu, 29 Jul 2010 17:58:03 +0000 http://www.alexonlinux.com/?p=1803#comment-24061 <a href='#comment-24050' rel="nofollow">@Brendan Miller</a> Thanks. I am familiar with most of these resources, but this is still very useful.<div class="comment-remix-meta"><a href="#" class="replyto" onclick="replyto('24061','Alexander Sandler'); return false;">Reply</a> - <a href="#" class="quote" onclick="quote('24061','Alexander Sandler','<a href=\'#comment-24050\' rel=\"nofollow\">@Brendan Miller<\/a>\r\nThanks. I am familiar with most of these resources, but this is still very useful.'); return false;">Quote</a></div> @Brendan Miller
Thanks. I am familiar with most of these resources, but this is still very useful.
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]]> By: Brendan Miller http://www.alexonlinux.com/call-a-constructor-or-allocate-an-object-in-place-2/comment-page-1#comment-24050 Brendan Miller Mon, 26 Jul 2010 17:00:10 +0000 http://www.alexonlinux.com/?p=1803#comment-24050 If you are really digging into c++, there are some great resources. The C++ faq lite has information on placement new and other core language features: http://www.parashift.com/c++-faq-lite/dtors.html#faq-11.10 Scott Meyer's Effective C++/Stl books are very good, and have similar information, but maybe better written. Josuttis' book The C++ Standard Library is a must read for applications programming. If you are in kernel space, you may not be able to use the standard library though. Finally, the newsgroup comp.lang.c++.moderated is the very best place to ask questions. There tend to be a lot of language lawyers on that newsgroup who can answer even obscure questions, as long as you explain yourself clearly and provide example code.<div class="comment-remix-meta"><a href="#" class="replyto" onclick="replyto('24050','Brendan Miller'); return false;">Reply</a> - <a href="#" class="quote" onclick="quote('24050','Brendan Miller','If you are really digging into c++, there are some great resources.\r\n\r\nThe C++ faq lite has information on placement new and other core language features:\r\nhttp:\/\/www.parashift.com\/c++-faq-lite\/dtors.html#faq-11.10\r\n\r\nScott Meyer\'s Effective C++\/Stl books are very good, and have similar information, but maybe better written.\r\n\r\nJosuttis\' book The C++ Standard Library is a must read for applications programming. If you are in kernel space, you may not be able to use the standard library though.\r\n\r\nFinally, the newsgroup comp.lang.c++.moderated is the very best place to ask questions. There tend to be a lot of language lawyers on that newsgroup who can answer even obscure questions, as long as you explain yourself clearly and provide example code.'); return false;">Quote</a></div> If you are really digging into c++, there are some great resources.

The C++ faq lite has information on placement new and other core language features:
http://www.parashift.com/c++-faq-lite/dtors.html#faq-11.10

Scott Meyer’s Effective C++/Stl books are very good, and have similar information, but maybe better written.

Josuttis’ book The C++ Standard Library is a must read for applications programming. If you are in kernel space, you may not be able to use the standard library though.

Finally, the newsgroup comp.lang.c++.moderated is the very best place to ask questions. There tend to be a lot of language lawyers on that newsgroup who can answer even obscure questions, as long as you explain yourself clearly and provide example code.

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]]> By: Hander http://www.alexonlinux.com/call-a-constructor-or-allocate-an-object-in-place-2/comment-page-1#comment-24049 Hander Mon, 26 Jul 2010 14:06:25 +0000 http://www.alexonlinux.com/?p=1803#comment-24049 Hi Alex! Can you provide a more detailed example of this kind of allocation? I've found it very interesting, but i cannot see it's use for... Thanks! Hander<div class="comment-remix-meta"><a href="#" class="replyto" onclick="replyto('24049','Hander'); return false;">Reply</a> - <a href="#" class="quote" onclick="quote('24049','Hander','Hi Alex!\r\n\r\nCan you provide a more detailed example of this kind of allocation? I\'ve found it very interesting, but i cannot see it\'s use for...\r\n\r\nThanks!\r\nHander'); return false;">Quote</a></div> Hi Alex!

Can you provide a more detailed example of this kind of allocation? I’ve found it very interesting, but i cannot see it’s use for…

Thanks!
Hander

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]]> By: Alexander Sandler http://www.alexonlinux.com/call-a-constructor-or-allocate-an-object-in-place-2/comment-page-1#comment-24047 Alexander Sandler Mon, 26 Jul 2010 05:34:02 +0000 http://www.alexonlinux.com/?p=1803#comment-24047 <a href='#comment-24040' rel="nofollow">@Alon</a> Cool. Exactly the bit I was missing. Thanks.<div class="comment-remix-meta"><a href="#" class="replyto" onclick="replyto('24047','Alexander Sandler'); return false;">Reply</a> - <a href="#" class="quote" onclick="quote('24047','Alexander Sandler','<a href=\'#comment-24040\' rel=\"nofollow\">@Alon<\/a>\r\nCool. Exactly the bit I was missing. Thanks.'); return false;">Quote</a></div> @Alon
Cool. Exactly the bit I was missing. Thanks.
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]]> By: Alon http://www.alexonlinux.com/call-a-constructor-or-allocate-an-object-in-place-2/comment-page-1#comment-24040 Alon Sun, 25 Jul 2010 12:01:10 +0000 http://www.alexonlinux.com/?p=1803#comment-24040 To destroy an object created with a placement new, you explicitly call the object destructor, this is the only time when you are actually allowed to do that<div class="comment-remix-meta"><a href="#" class="replyto" onclick="replyto('24040','Alon'); return false;">Reply</a> - <a href="#" class="quote" onclick="quote('24040','Alon','To destroy an object created with a placement new, you explicitly call the object destructor, this is the only time when you are actually allowed to do that'); return false;">Quote</a></div> To destroy an object created with a placement new, you explicitly call the object destructor, this is the only time when you are actually allowed to do that
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