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Checking for NULL pointer in C/C++ [closed]
...inct.
Edit: As SoapBox points out in a comment, they are compatible with C++ classes such as auto_ptr that are objects that act as pointers and which provide a conversion to bool to enable exactly this idiom. For these objects, an explicit comparison to NULL would have to invoke a conversion to po...
How do you declare an interface in C++?
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How typical of a C++ answer that the top answer doesn't directly answer the question (though obviously the code is perfect), instead it optimizes the simple answer.
– Tim
Aug 24 '12 at 22:49
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Boost.Asio的简单使用(Timer,Thread,Io_service类) - C/C++ - 清泛网 - 专注C/C++及内核技术
...实现周期运行,所以我们再介绍两个新参数
指向timer的指针
一个int*来指向计数器
void print(const asio::error& /*e*/,
asio::deadline_timer* t, int* count)
{
我们打算让这个函数运行6个周期,然而你会发现这里没有显式的方法来...
What exactly does an #if 0 … #endif block do?
In C /C++
9 Answers
9
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Why does C++ rand() seem to generate only numbers of the same order of magnitude?
In a small application written in C/C++, I am facing a problem with the rand function and maybe the seed :
9 Answers
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手握利器，直面“蓝脸”! ——使用WinDbg抗击系统崩溃 - 操作系统(内核) - ...
...(InstructionPtr，仅x86处理器，用于决定帧的堆栈回朔的指令指针)不存在于任何已知的模块中，下面的帧可能出现错误”。这个意思的解释已超出本文讨论范围，笔者仅告诉大家，这行文字下面的一行右侧的模块是系统蓝屏崩溃时...
What does a colon following a C++ constructor name do? [duplicate]
What does the colon operator (":") do in this constructor? Is it equivalent to MyClass(m_classID = -1, m_userdata = 0); ?
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What is the lifetime of a static variable in a C++ function?
...2
Created in foo
Created in if
Destroyed in if
Destroyed in foo
[0] Since C++98[2] has no reference to multiple threads how this will be behave in a multi-threaded environment is unspecified, and can be problematic as Roddy mentions.
[1] C++98 section 3.6.3.1 [basic.start.term]
[2] In C++11 statics...
How would one write object-oriented code in C? [closed]
...ymorphism then yes, you can, we were doing that sort of stuff years before C++ came about.
Basically you use a struct to hold both the data and a list of function pointers to point to the relevant functions for that data.
So, in a communications class, you would have an open, read, write and close...
How to calculate a time difference in C++
What's the best way to calculate a time difference in C++? I'm timing the execution speed of a program, so I'm interested in milliseconds. Better yet, seconds.milliseconds..
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