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process.waitFor() never returns
...eason is that the process produces some output and you don't read from the appropriate streams. This means that the process is blocked as soon as the buffer is full and waits for your process to continue reading. Your process in turn waits for the other process to finish (which it won't because it w...
ActiveMQ or RabbitMQ or ZeroMQ or [closed]
... a wider view on the topic.
These 3 messaging technologies have different approaches on building distributed systems :
RabbitMQ is one of the leading implementation of the AMQP protocol (along with Apache Qpid). Therefore, it implements a broker architecture, meaning that messages are queued on a ...
Android: ProgressDialog.show() crashes with getApplicationContext
I can't seem to grasp why this is happening. This code:
18 Answers
18
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When should I use a NoSQL database instead of a relational database? Is it okay to use both on the s
...n oriented data stores. It's proven and suitable for 99% of the real world applications. You can practically do anything with relational databases.
But, there are limitations on speed and scaling when it comes to massive high availability data stores. For example, Google and Amazon have terabytes o...
How do I declare a global variable in VBA?
... function:
Public iRaw As Integer
Public iColumn As Integer
Function find_results_idle()
iRaw = 1
iColumn = 1
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BeanFactory vs ApplicationContext
...ring Framework, I've been playing around with it and putting a few samples apps together for the purposes of evaluating Spring MVC for use in an upcoming company project. So far I really like what I see in Spring MVC, seems very easy to use and encourages you to write classes that are very unit test...
Creating a copy of a database in PostgreSQL [closed]
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Yes, the same caveats apply to this command, as to explicit CREATE DATABASE invocation. Like the comments for Bell's answer above say, the database should be idle.
– zbyszek
Apr 13 '12 at 15:50
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C++/COM VARIANT实现二维数组 - C/C++ - 清泛网 - 专注C/C++及内核技术
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使用SAFEARRAR实现二维数组的源代码如下：
VARTYPE vt = VT_I4; /*数组元素的类型，long*/
SAFEARRAYBOUND sab[2]; /*用于定义数组的维数和下标的起始值*/
sab[0].cElements = 2;
sab[0].lLbound = 0;
sab[1].cElements = 2;
sab[1].lLbou...
Why do we need a pure virtual destructor in C++?
...mp; aModelConf);
virtual ~IParams() = 0;
void setParameter(const N_Configuration::Parameter& aParam);
std::map<std::string, std::string> m_Parameters;
};
struct NumericsParams : IParams
{
NumericsParams(const ModelConfiguration& aNumericsConf);
virtual ~NumericsP...
difference between primary key and unique key
...edited Mar 17 '17 at 9:27
stuart_mad
12511 silver badge1414 bronze badges
answered Jun 26 '12 at 0:14
dhidhi
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