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BLE connection error “Connection status was set to OS code 133” - 创...
https://stackoverflow.com/questi ... droid-bluetooth-ble
问题原来是设备试图发送大于 MTU 大小的数据包，Android 默认为 23，至少在我测试的特定设备上是这样。
请求更大的 MTU 大小确实解决了问题。
但是，如果错误代码可以明确指出...
App上架国内应用市场，腾讯管家报病毒的解决历程 - App Inventor 2 中文网 ...
...馈到了MIT英文社区，官方权威回答是appinventor及代码没有问题，需要向腾讯申诉误报，白名单放行等。、
言下之意就是：不是appinventor的问题，是腾讯的审核规则问题。
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尝试过了，但是国内的规则你懂的...
Is recursion ever faster than looping?
... of steps: a sequence of instructions: i.e.: do this first, do this after, etc. An imperative sequence of instructions. Even one line expressions are "an imperative sequence of instructions". If you have an expression with a specific "order of evaluation" then you have steps. It means than even a si...
fastest (low latency) method for Inter Process Communication between Java and C/C++
...e send/received,
2 Java processes just spawned, without assigning specific CPU cores with taskset:
TCP - 25 microseconds
Named pipes - 15 microseconds
Now explicitly specifying core masks, like taskset 1 java Srv or taskset 2 java Cli:
TCP, same cores: 30 microsecond...
C# 能否获取一个对象所占内存的大小？ - 更多技术 - 清泛网 - 专注C/C++及内核技术
...所占内存的大小？今日，在项目重构的时候忽然想到一个问题，一个类哪些成员的增加，会影响一个类所占内存的大小？C#有没有办法知道一个对象占多少内存呢？ ...今日，在项目重构的时候忽然想到一个问题，一个类哪些成员...
Error java.lang.OutOfMemoryError: GC overhead limit exceeded
...y, use memory profiling tools like MAT ( Memory analyzer tool), Visual VM etc and fix memory leaks.
Upgrade JDK version to latest version ( 1.8.x) or at least 1.7.x and use G1GC algorithm. . The throughput goal for the G1 GC is 90 percent application time and 10 percent garbage collection time
Apar...
Why is Java's boolean primitive size not defined?
...are managed via your getters and setters. However, you'll pay a penalty in CPU time that is probably bigger than the penalty in memory.
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What is the “FS”/“GS” register intended for?
... used to manage thread-specific memory. The linux kernel uses GS to access cpu-specific memory.
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Is MD5 still good enough to uniquely identify files?
...ly identify it given all the breaking of MD5 algorithm and security issues etc? Security is not my primary concern here, but uniquely identifying each file is.
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【PM干货】2015年阿里业务型PM笔试题 - 项目管理 - 清泛网 - 专注C/C++及内核技术
...界面优化方案。
3、淘宝过程中经常存在用户信息泄露的问题，而快递公司必须知道买家的联系方式，淘宝商家利用这个联系方式向用户发送营销信息。
请设计一个流程来改善这个问题，必须包括：
1）分析淘宝卖家、买家和...