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Objective-C Static Class Level variables
...C as programming language.
Objective-C does not support class variables as C++ does.
One Alternative:
Simulate a class variable behavior using Objective-C features
Declare/Define an static variable within the classA.m so it will be only accessible for the classA methods (and everything you put ins...
public friend swap member function
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What is a friend function? There is confusion around this area.
Before C++ was standardized, friend functions did something called "friend name injection", where the code behaved as if if the function had been written in the surrounding namespace. For example, these were equivalent pre-standard:...
Can “this” ever be null in Java?
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I don't know deeply about Java, but in C++ the this of an instance method could be NULL. So I am not quite convinced this is a sufficient reason in Java.
– kennytm
Sep 24 '10 at 17:32
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When to use std::forward to forward arguments?
C++0x shows an example of using std::forward :
3 Answers
3
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Can I use if (pointer) instead of if (pointer != NULL)?
...to boolean false while non-null pointers are converted into true. From the C++11 standard, section on Boolean Conversions:
A prvalue of arithmetic, unscoped enumeration, pointer, or pointer to member type can be converted to a
prvalue of type
bool. A zero value, null pointer value, or null m...
Is “inline” without “static” or “extern” ever useful in C99?
...ion specifiers
A new feature of C99: The inline keyword, adapted from C++, is a function-specifier that
can be used only in function declarations. It is useful for program optimizations that require the
definition of a function to be visible at the site of a call. (Note that the Standard do...
Do I need to explicitly call the base virtual destructor?
When overriding a class in C++ (with a virtual destructor) I am implementing the destructor again as virtual on the inheriting class, but do I need to call the base destructor?
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Why doesn't std::queue::pop return value.?
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C++11 note: if T has a cheap noexcept move-constructor (which is often the case for the kind of objects put in stacks) then returning by value is efficient and exception-safe.
– Roman L
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What was the strangest coding standard rule that you were forced to follow? [closed]
...ere banned. Then the fact this was a leftover from C, rendered obsolete by C++ RAII and functions with size less than 15 lines, was revealed. Since then, like Braveheart: "FREEDOM !!!!" ... :-p ...
– paercebal
Oct 20 '08 at 21:13
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initialize a vector to zeros C++/C++11
I know in C++11 they added the feature to initialize a variable to zero as such
2 Answers
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