%p\n", single); } pthread_mutex_unlock(&my_mutex); } return single; } int main(...
oracle升级到19C有直接和间接升级,11.2.0.4以下的版本需要先升级到11.2.0.4然后再升级到19c;11.2.0.4以上版本可以直接升级。而我的版本是11.2.0.4,所以升级成非CDB的数据库。 19c升级步骤 升级环境 服务器os linux7.5 内存256G cpu 32核 oracle 版本 11.2.0.4 数据量240G oracle 19c软件静默安装时间约5-10分钟...
* Calling sharedInstance will instantiate the class and swizzle some methods to ensure * that only a single instance ever exists. * Calling purgeSharedInstance will destroy the shared instance and return the swizzled * methods to their former selves. * * * Usage: * * MyClass.h: * === * ...
classCSingleton:{// 其它成员public:staticCSingleton*GetInstance()private:CSingleton(){};staticCSingleton*m_pInstance;classCGarbo// 它的唯一工作就是在析构函数中删除CSingleton的实例{public:~CGarbo(){if(CSingleton::m_pInstance)deleteCSingleton::m_pInstance;}};staticCGarbo Garbo;// 定义一个静态...
It is fair to say, though, that our psychological biases play a major role. People’s hesitancy to delay satisfaction is the most obvious example, but there are others.One of them is about how the most accessible information in the present affects decisions about the future. For instance, ...
For their part, big corporations do seem to be in an exploratory phase of finding solutions to the plastic crisis. For instance, dozens have signed on with Loop, a new service that sends people goods in recyclable packaging that can ...
由于instance的大小不同,一些图像文字区域的面积大于所有其他文字的面积,因此提出一种实例平衡交叉熵损失函数,即为每一个instance计算一个权重:权重为所有像素面积的平均值除以每一个instance的面积。训练过程中采取了OHEM(Online Hard Example Ming)的训练策略,选取r x S个负样本中loss最高的像素,其中,r为负样本与...
SingleInstance.SingleApplication.Run(newFrmMain()); } FrmMainis the main form class name. TheRunmethod returnsfalseif any other instance of the application is already running. For a console based application, callRun( )without any parameter and check the return value, if it is true you can ex...
Most food webs，for instance，consist of many weak links rather than a few strong ones.例如，大多数食物网是由许多薄弱环节组成的，而不是由一些强环节组成的。When a predator（掠食动物）always eats huge numbers of a single prey（猎物），the two species are strongly linked；when a predator lives ...
A single instance of this instance family can deliver up to 200,000 IOPS. Provides high storage I/O performance based on large computing capacity. For more information, see Storage I/O performance. Network: Supports IPv4 and IPv6. For information about IPv6 communication, see IPv6 ...