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Dark GDK / Propor use of "delete"

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Cuddle Bunniezzz 12
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Joined: 14th Jan 2009
Location: Buffalo, NY
Posted: 23rd Jan 2011 06:40
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Hey, I'm just wondering if I'm using the delete operator here properly.



Just that, Thanks.

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Bran flakes91093
15
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Joined: 13th Sep 2008
Location: Crazy Land
Posted: 23rd Jan 2011 16:59
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Yes, use "delete[]" when deleting arrays, and "delete" for single objects.

“C++ : Where friends have access to your private members.”
-Gavin Russell Baker
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Cuddle Bunniezzz 12
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Location: Buffalo, NY
Posted: 23rd Jan 2011 20:30
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Another question:

what if I changed "delete[] buffer;" to "delete[64] buffer;"? Would that only delete the 64th element in the array?

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Dar13
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Joined: 12th May 2008
Location: Microsoft VisualStudio 2010 Professional
Posted: 23rd Jan 2011 20:33 Edited at: 25th Jan 2011 22:44
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I'm mistaken, ignore me.


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Cuddle Bunniezzz 12
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Posted: 24th Jan 2011 04:09
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Well, "delete[64] buffer;" compiles with no complaints in MSVC9.

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Benjamin
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Joined: 24th Nov 2002
Location: France
Posted: 24th Jan 2011 07:14
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Quote: "No. You would use "delete buffer[64]" if I'm not mistaken."


You are mistaken.
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Hassan
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Posted: 24th Jan 2011 13:16 Edited at: 24th Jan 2011 13:17
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if your buffer is an array of pointers, you can use delete buffer[64]; to delete 64th element (this is NOT your case),but i have never seen delete[64] buffer; syntax really

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Bran flakes91093
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Location: Crazy Land
Posted: 24th Jan 2011 18:16
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Quote: "to delete 64th element"


65th element.

And no, don't do that.

“C++ : Where friends have access to your private members.”
-Gavin Russell Baker
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WLGfx
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Joined: 1st Nov 2007
Location: NW United Kingdom
Posted: 25th Jan 2011 00:29 Edited at: 25th Jan 2011 00:31
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Actually:

char* buff=new char[64]; correct

delete buff; correct

delete buff[x]; incorrect because buff points to the memory. Each element hasn't been allocated separately.

delete &buff[x]; is also incorrect for the same reason exept for &buff[0];

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dark coder
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Joined: 6th Oct 2002
Location: Japan
Posted: 25th Jan 2011 06:09
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Quote: "delete buff; incorrect"


Fixed that for you.


It's not that hard to understand; new requires delete, new[] requires delete[].

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