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App Inventor 2 UrsPahoMqttClient 拓展 - 物联网轻量级MQTT协议 · App Inventor 2 中文网
...指针是否指向某个对象。
ToDictionary / FromDictionary
这些函数使管理连接数据变得更加容易。ToDictionary 使用以下键创建一个包含对象所有属性的 Dictionary：Broker、Port、ConnectionTimeout、TimeToWait、KeepAlive、ClientID、UserName、UserPassword...
Start thread with member function
...i++)
{
cout << "CB()=" << i << endl;
Sleep(1000);
}
}
void main()
{
CB obj; // please note the address of obj.
thread t(obj); // here obj will be passed by value
//i.e. thread will make it own local copy of it.
...
Pointer expressions: *ptr++, *++ptr and ++*ptr
... @verbose you sir, have lived up to your name.. :)
– sleeping_dragon
Jan 9 '14 at 8:10
|
show 6 more comments
...
multiprocessing.Pool: When to use apply, apply_async or map?
...mple:
import multiprocessing as mp
import time
def foo_pool(x):
time.sleep(2)
return x*x
result_list = []
def log_result(result):
# This is called whenever foo_pool(i) returns a result.
# result_list is modified only by the main process, not the pool workers.
result_list.appen...
Java: notify() vs. notifyAll() all over again
...one of threads is notified to wake up, execute the next job and go back to sleep.
Use notifyAll() for other cases where the waiting threads may have different purposes and should be able to run concurrently. An example is a maintenance operation on a shared resource, where multiple threads are waiti...
ZMQ: 基本原理 - 开源 & Github - 清泛网 - 专注C/C++及内核技术
...格地说不是不可缺少的。毕竟，混合这两个为一个单独的函数是很容易的：
zmq_send (s, "tcp://192.168.0.111:5555", data, sizeof (data), 0);
分离的理论基础即是技术的又是学术的。技术方面的争论包括：
当我...
ZMQ: 基本原理 - 开源 & Github - 清泛网 - 专注C/C++及内核技术
...格地说不是不可缺少的。毕竟，混合这两个为一个单独的函数是很容易的：
zmq_send (s, "tcp://192.168.0.111:5555", data, sizeof (data), 0);
分离的理论基础即是技术的又是学术的。技术方面的争论包括：
当我...
How can I unit test Arduino code?
...lis() - start < 10000 ) {
cout << millis() << endl;
sleep(1);
}
unsigned long end = millis();
cout << "End of test - duration: " << end - start << "ms" << endl;
}
void delay_test() {
unsigned long start = millis();
cout << "delay() test...
ZMQ: 基本原理 - 开源 & Github - 清泛网移动版 - 专注C/C++及内核技术
...格地说不是不可缺少的。毕竟，混合这两个为一个单独的函数是很容易的：
zmq_send (s, "tcp://192.168.0.111:5555", data, sizeof (data), 0);
分离的理论基础即是技术的又是学术的。技术方面的争论包括：
当我...
Adding gif image in an ImageView in android
...(mUpdateResults);
try {
Thread.sleep(t);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
if(ntimes != 0) {
repetitionCounter ++;...