Tag » Semaphore

Round up for Mar 20, ’17

In startup news, Cairo traffic is an example of going nowhere fast. But there are startups that want to “Uber” deliveries. Yes, in Cairo you can order almost anything and have it delivered to your door. 551 kata lagi

Tekqio

March 2

1791: The semaphore is demonstrated. Semaphore communications are a way of passing information via visual means. Towers have pivoting shutters, called blades or paddles, and the information is encoded at one end, passed along via the signals, and decoded at the receiving end, or else passed further along a route. 453 kata lagi

History

mutex实现semaphore

Mutex变量是非0即1的,可看作一种资源的可用数量,初始化时Mutex是1,表示有一个可用资源,加锁时获得该资源,将Mutex减到0,表示不再有可用资源,解锁时释放该资源,将Mutex重新加到1,表示又有了一个可用资源。信号量(Semaphore)和Mutex类似,表示可用资源的数量,和Mutex不同的是这个数量可以大于1。 540 kata lagi

C/C++

Semaphore

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Resources

Old School Guiding Night

While we were doing our First Aid badge, we had one week where about half of our Guide unit who are all from the same year group in the same school were off to P7 camp. 330 kata lagi

Senior Section

What is yin yoga?

What is yin yoga?
Yin yoga is a super-slow form of yoga, involving seated or reclined poses which are held for at least two to five minutes each. 396 kata lagi

Yoga