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How do I show the value of a #define at compile-time?

...n in the gcc online documentation. How it works: The preprocessor understands quoted strings and handles them differently from normal text. String concatenation is an example of this special treatment. The message pragma requires an argument that is a quoted string. When there is more than one com...
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When should I use a struct instead of a class?

... MSDN has the answer: Choosing Between Classes and Structures. Basically, that page gives you a 4-item checklist and says to use a class unless your type meets all of the criteria. Do not define a structure unless the type has all of the following characterist...
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What is the real overhead of try/catch in C#?

So, I know that try/catch does add some overhead and therefore isn't a good way of controlling process flow, but where does this overhead come from and what is it's actual impact? ...
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How to get a list of installed android applications and pick one to run

...sked a similar question to this earlier this week but I'm still not understanding how to get a list of all installed applications and then pick one to run. ...
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Change priorityQueue to max priorityqueue

...will take two Integers as input parameters, subtract them from each other, and return the arithmetic result. The lambda function implements the Functional Interface, Comparator<T>. (This is used in place, as opposed to an anonymous class or a discrete implementation.) ...
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Populate a Razor Section From a Partial

...red by a partial at the bottom of the page with the rest of the Javascript and not in the middle of the page where the partial is rendered. ...
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ZeroMQ实例-使用ZMQ(ZeroMQ)进行局域网内网络通信 - C/C++ - 清泛网 - 专注C/C++及内核技术

...码 //包含zmq的头文件 #include <zmq.h> #include "stdio.h" int main(int argc, char * argv[]) { void * pCtx = NULL; void * pSock = NULL; const char * pAddr = "tcp://*:7766"; //创建context,zmq的socket 需要在context上进行创建 if((pCtx = zmq_ctx_ne...
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Determining if a number is either a multiple of ten or within a particular set of ranges

...m - 1) / 10) % 2 == 1 &amp;&amp; num &lt;= 100) But that's rather dense, and you might be better off just listing the options explicitly. Now that you've given a better idea of what you are doing, I'd write the second one as: int getRow(int num) { return (num - 1) / 10; } if (ge...
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How to determine if a type implements a specific generic interface type

...plements(IBar), or even better, using a keyword "is" .... I'm exploring c# and I'm a more then bit disappointed in .net right now ... – Sofija Mar 5 '12 at 22:12 2 ...
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Will strlen be calculated multiple times if used in a loop condition?

...tion. If it might, then you'll need to either call strlen() each time, or handle it through more complicated logic. share | improve this answer | follow | ...