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Are the shift operators () arithmetic or logical in C?
...tation-dependent for right shifts of signed values.
Wikipedia says that C/C++ 'usually' implements an arithmetic shift on signed values.
Basically you need to either test your compiler or not rely on it. My VS2008 help for the current MS C++ compiler says that their compiler does an arithmetic shi...
error: passing xxx as 'this' argument of xxx discards qualifiers
...
Actually the C++ standard (i.e. C++ 0x draft) says (tnx to @Xeo & @Ben Voigt for pointing that out to me):
23.2.4 Associative containers
5 For set and multiset the value type
is the same as the key type. For map
and multimap...
How do you tell the Visual Studio project type from an existing Visual Studio project
....vproj file defines the project type, for example, the following defines a C++ project.
<VisualStudioProject
ProjectType="Visual C++"
The project tag also includes the compiler version.
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Appending a vector to a vector [duplicate]
...lly applicable solution, as b could also be an array. However, it requires C++11. If you want to work with user-defined types, use ADL:
using std::begin, std::end;
a.insert(end(a), begin(b), end(b));
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How to redirect cin and cout to files?
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If the answers were equal in functionality, the C++ equivalent of this would be ofstream out("out.txt"); cout.rdbuf(out.rdbuf()); - only one extra line, and it's portable. Not soooo much simpler :)
– nevelis
Jul 19 '17 at 3:03
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Why doesn't delete set the pointer to NULL?
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Stroustrup himself answers. An excerpt:
C++ explicitly allows an
implementation of delete to zero out
an lvalue operand, and I had hoped
that implementations would do that,
but that idea doesn't seem to have
become popular with implementers.
But the mai...
Rename a class in Xcode: Refactor… is grayed out (disabled). Why?
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If you are using Objective-C++ (i.e. mix Objective-C with C++ code) then refactoring is disabled in xcode since it does not support refactoring of C++ code.
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What happens to global and static variables in a shared library when it is dynamically linked?
...tions) are never visible from outside a module (dll/so or executable). The C++ standard requires that these have internal linkage, meaning that they are not visible outside the translation unit (which becomes an object file) in which they are defined. So, that settles that issue.
Where it gets comp...
What is the difference between public, protected, package-private and private in Java?
...I control. (While not Java syntax, it is important for this discussion).
C++ defines an additional level called "friend" and the less you know about that the better.
When should you use what? The whole idea is encapsulation to hide information. As much as possible you want to hide the detail of...
Is floating-point math consistent in C#? Can it be?
...g floating point operations. Most information is probably specific to C or C++, however.
http://www.math.utah.edu/~beebe/software/ieee/
A note on fixed point
Binary fixed point numbers can also work well as a substitute for floating point, as is evident from the four basic arithmetic operations:
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