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plurals

PO
primarykey
Id
5037757
data
AcceptedAnswerId
0
AnswerCount
0
ClosedDate
CommentCount
0
CommunityOwnedDate
CreationDate
2011-02-18T04:50:01.553
FavoriteCount
0
LastActivityDate
2011-02-18T05:13:59.080
LastEditDate
2011-02-18T05:13:59.080
LastEditorUserId
516725
OwnerUserId
516725
ParentId
5037701
PostTypeId
2
Score
6
ViewCount
0
LastEditorDisplayName
text
Body
<code>const</code> does not change where things are stored it's a keyword to tell the compiler to prevent variables or functions from modifying things. Example: <pre><code>std::string myNormalStr("Hello"); const std::string myConstStr("Don't Change Me"); myNormalStr = myConstStr; // this is ok myConstStr = myNormalStr; // this will give you a compile error </code></pre> That's a super simplistic example but the same thing applies to <code>const</code> objects which are passed into functions, returned from functions, or if the function itself is <code>const</code>. Here's <a href="http://www.gotw.ca/gotw/006.htm" rel="nofollow">a great article by Herb Sutter</a> on all the correct ways to use the <code>const</code> keyword. Edit: Currently there is almost no reason to use the <code>auto</code> keyword as everything is implicitly auto within it's scope. This keyword is a storage class specifier for an automatic variable. However the <code>auto</code> keyword is changing as part of the new C++ standard in progress but is supported already by Visual Studio 2010 and some other compilers in it's new glorious form. It can be used like so in C++0x: <pre><code>std::vector<int> numbers; for (std::vector<int>::const_iterator itr(numbers.begin()); itr != numbers.end(); ++itr) { // do something with each iterated element } // compiler auto deduces from rvalue // and determines that you want a // std::vector<int>::const_iterator type for (auto itr = numbers.cbegin(); itr != numbers.cend(); ++itr) { // do something with each iterated element } </code></pre>
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1. POWhere are const objects stored
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1. USAJG85
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1. USAJG85
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