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How does delete[] know it's an array?
...over-allocating enough to store the array size. For more details, see the C++ Super FAQ.
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【内核源码】linux UDP实现 - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术
【内核源码】linux UDP实现linux-udp创建udp socket在socket()创建的时候，会设置对应协议的操作集。 inet_dgram_ops是系统调用层直接调用的操作。udp_prot是底层协议的处理。可以看到相比TCP，UDP不用accept(),lis 创建udp socket
在socket()创建...
What is meant by 'first class object'?
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But I can do this in C++: int twice(int x) { return x << 1; } int (*f)(int) = twice; std::cout<<(*f)(5)<<std::endl; Does that mean C++ treats functions as first class objects (with a funny syntax)?
– Thoma...
Objective-C : BOOL vs bool
...tion blocks, e.g.), when you compile for iOS 32 bits (iPhone 5C...). I use C++ bool everywhere in my code, and BOOL in the APIs that are defined with BOOL
– stephane k.
Mar 6 at 11:16
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What does (x ^ 0x1) != 0 mean?
...ually Spook is right. The test (x != 1) is not equivalent. The code can be C++ (and in C++, ^ can be an operator that does anything). So you don't know the context, @Spook is right.
– xryl669
Dec 19 '13 at 18:33
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What is the meaning of the term “free function” in C++?
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The term free function in C++ simply refers to non-member functions. Every function that is not a member function is a free function.
struct X {
void f() {} // not a free function
};
void g() {} // free function
in...
What does int argc, char *argv[] mean?
In many C++ IDE's and compilers, when it generates the main function for you, it looks like this:
8 Answers
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How to initialize a struct in accordance with C programming language standards
... the same as objects that have static storage duration.
Microsoft Visual C++ compiler should support designated initializers since version 2013 according to official blog post C++ Conformance Roadmap. Paragraph Initializing unions and structs of Initializers article at MSDN Visual Studio document...
Is cout synchronized/thread-safe?
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The C++03 standard does not say anything about it. When you have no guarantees about the thread-safety of something, you should treat it as not thread-safe.
Of particular interest here is the fact that cout is buffered. Even if ...
Why does C# allow {} code blocks without a preceding statement?
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And in C++, because of RAII instead of GC, it is far more useful.
– Deduplicator
Dec 23 '15 at 1:44
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