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再说WCF Data Contract KnownTypeAttribute - 更多技术 - 清泛网 - 专注C/C++及内核技术
...为了DataContract类型定义的简约和独立性，我们不妨将这个函数摘出来，或许更有利于程序结构：
[ServiceContract]
[ServiceKnownType("GetKnownTypes", typeof(KnownTypesProvider))]
public interface IService1
{
......
}
static class KnownTypesProvider
{...
传感器组件 · App Inventor 2 中文网
...下找到并使用位置提供者，或者等待位置改变时 事件。
模拟器并不模拟所有设备上的传感器，App应该在物理设备上进行测试。
属性
精度
位置传感器将能够根据卫星、手机信号塔和其他用于估计位置的数据的质量，以不...
再说WCF Data Contract KnownTypeAttribute - 更多技术 - 清泛网移动版 - 专注C/C++及内核技术
...为了DataContract类型定义的简约和独立性，我们不妨将这个函数摘出来，或许更有利于程序结构：
[ServiceContract]
[ServiceKnownType("GetKnownTypes", typeof(KnownTypesProvider))]
public interface IService1
{
......
}
static class KnownTypesProvider
{...
AsyncTask Android example
...t i = 0; i < 5; i++) {
try {
Thread.sleep(1000);
} catch (InterruptedException e) {
// We were cancelled; stop sleeping!
}
}
return "Executed";
}
@Override
prot...
Using module 'subprocess' with timeout
... print self.process.returncode
command = Command("echo 'Process started'; sleep 2; echo 'Process finished'")
command.run(timeout=3)
command.run(timeout=1)
The output of this snippet in my machine is:
Thread started
Process started
Process finished
Thread finished
0
Thread started
Process started...
Objective-C 2.0 Mac和iOS开发实践指南 PDF扫描版 - 文档下载 - 清泛网 - ...
...介
第1章 C，Object.ve.C的基础
1.1. C程序的结构
1.1.1. main函数
1.1.2 格式化
1.1.3 注释
1.1.4 变量和函数名
1.1.5 命名惯例
1.1.6 文件
1.2 变量
1.2.1. 整数类型
1.2.2 浮点类型
1.2.3 真值
1.2.4 初始化
1.2.5 指针
1.2.6 数组
1.2.7 字符串
...
Cleanest way to write retry logic?
... if (attempted > 0)
{
Thread.Sleep(retryInterval);
}
return action();
}
catch (Exception ex)
{
exceptions.Add(ex);
}
}
throw new AggregateExce...
When should we use mutex and when should we use semaphore
... when to use what -
Semaphore:
Use a semaphore when you (thread) want to sleep till some other thread tells you to wake up. Semaphore 'down' happens in one thread (producer) and semaphore 'up' (for same semaphore) happens in another thread (consumer)
e.g.: In producer-consumer problem, producer wa...
How to write a cron that will run a script every day at midnight?
... # Run every minute at 0, 20, and 40 second intervals
* * * * * sleep 00; /usr/local/sbin/run_3times_per_minute.sh
* * * * * sleep 20; /usr/local/sbin/run_3times_per_minute.sh
* * * * * sleep 40; /usr/local/sbin/run_3times_per_minute.sh
To add a cron job, you can do on...
MySQL show status - active or total connections?
... 0 | NULL | show processlist |
| 5 | root | localhost:61704 | webapp | Sleep | 208 | | NULL |
| 6 | root | localhost:61705 | webapp | Sleep | 208 | | NULL |
| 7 | root | localhost:61706 | webapp | Sleep | 208 | | NULL |
+----+--...