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App Inventor 2 低功耗蓝牙 BlueToothLE 拓展 · App Inventor 2 中文网

...号(真)或无符号(假)。 ReadConnectedRssi – 启动对已连接设备的接收信号强度指示 (RSSI) 的读取。结果值将通过 RssiChanged 事件中参数给出。 ReadFloats – 从连接的BLE设备读取一个或多个 IEEE 754 浮点数。服...
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企业级负载平衡简介 - 更多技术 - 清泛网 - 专注C/C++及内核技术

...之间的匹配关系将全部丢失。这样当备份负载平衡服务器启动之后,所有的用户请求都将被定向到随机的服务实例。 而另一个问题就是会话维护功能对内存的消耗。与L3/4服务器上的会话维护不同,一个Cookie的失效时间可能非常...
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Uber5岁了,一次性告诉你它的商业之道 - 资讯 - 清泛网 - 专注C/C++及内核技术

...一地区的用户等待人数超过了设定的界限,溢价系统便会启动,根据用户发送需求和司机数量的比例来调整溢价倍数,“当然,也依赖既有的数据搜集以及在此基础上的预测。” Uber为此背负了“趁火打劫”的名声。2014年12月15...
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内存管理内幕:动态分配的选择、折衷和实现 - C/C++ - 清泛网 - 专注C/C++及内核技术

...存到硬盘中,从硬盘上加载被请求的内存, 然后再重新启动您的进程。这样,每个进程都获得了自己可以使用的地址空间,可以访问比您物理上安装的内存更多的内存。 在 32-位 x86 系统上,每一个进程可以访问 4 GB 内存。现在...
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Clear the entire history stack and start a new activity on Android

Is it possible to start an activity on the stack, clearing the entire history before it? 13 Answers ...
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Android: Clear Activity Stack

I'm having several activities in my application. and flow is very complicated. When I click the Logout application navigates to login Screen and from there user can exit by cancel button (calling system.exit(0) ) ...
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What is the difference between onPause() and onStop() of Android Activites?

From android doc here http://developer.android.com/reference/android/app/Activity.html , it said 'Activity comes into foreground' will call onPause() , and 'Activity is no longer visible' will call onStop() . ...
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Android: open activity without save into the stack

I have 2 activities: Main and List. 10 Answers 10 ...
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Finish an activity from another activity

I want to finish one activity from another activity, like: 10 Answers 10 ...
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How can I return to a parent activity correctly?

I have 2 activities (A and B) in my android application and I use an intent to get from activity A to activity B. The use of parent_activity is enabled: ...