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领域驱动设计系列（三）:事件驱动上 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...nt.DeActive();
_emailService.SendEmail();
}
}
但是，问题来了，如果后来我们要说，如果设备坏了，我们要更改可用库存的数量，这时候我们是不是要在这里修改代码而引入IInventoryService? 后来如果经理说设备坏了你们尽然...
The point of test %eax %eax [duplicate]
... the operands (registers) as they are and just set/unset specific internal CPU flags like the zero-flag (ZF). You can think at the ZF as a true/false boolean flag that resides inside the CPU.
in this particular case, TEST instruction performs a bitwise logical AND, discards the actual result and s...
What is the most effective way for float and double comparison?
...
Be extremely careful using any of the other suggestions. It all depends on context.
I have spent a long time tracing a bugs in a system that presumed a==b if |a-b|<epsilon. The underlying problems were:
The implicit presumption in an algorithm that if a==b and b==c then a==c.
...
What's the better (cleaner) way to ignore output in PowerShell? [closed]
...ad and > $null has about a 0.3% overhead.
Addendum 2017-10-16: I originally overlooked another option with Out-Null, the use of the -inputObject parameter. Using this the overhead seems to disappear, however the syntax is different:
Out-Null -inputObject ($(1..1000) | ?{$_ -is [int]})
And no...
Making the Android emulator run faster
...
Official web page
~50% faster
Windows:
Install "Intel x86 Emulator Accelerator (HAXM)" => SDK-Manager/Extras
Install "Intel x86 Atom System Images" => SDK-Manager/Android 2.3.3
Go to the Android SDK root folder and navigate to extras\intel\Hardware_Accelerated_E...
App Inventor 2 UrsPahoMqttClient 拓展 - 物联网轻量级MQTT协议 · App Inventor 2 中文网
...它与以前的版本不兼容，但允许使用 SSL/TLS 连接以满足更高的安全要求。
在 MQTT 客户端连接到 MQTT 服务器之前，必须先设置连接参数，然后使用 Connect 方法创建与服务器的连接。ConnectionStateChanged 事件报告连接状态的任...
Simple proof that GUID is not unique [closed]
...(OutOfMemoryException)
{
// Release the ram we allocated up front.
// Actually, these are pointless too.
//GC.KeepAlive(reserveSomeRam);
//GC.Collect();
}
Console.WriteLine("{0:u} - Built bigHeapOGuid...
Mismatch Detected for 'RuntimeLibrary'
...racted Crypto++ in C:\cryptopp. I used Visual Studio Express 2012 to build all the projects inside (as instructed in readme), and everything was built successfully. Then I made a test project in some other folder and added cryptolib as a dependency. After that, I added the include path so I can easi...
理解和配置 Linux 下的 OOM Killer - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术
...经常死机，登陆到终端看了一下，都是常见的 Out of memory 问题。这通常是因为某时刻应用程序大量请求 最近有位 VPS 客户抱怨 MySQL 无缘无故挂掉，还有位客户抱怨 VPS 经常死机，登陆到终端看了一下，都是常见的 Out of memory 问...
How to discover number of *logical* cores on Mac OS X?
...id-2011 1.7GHz MacBook Air, this command says 4. However, I suspected it really only has 2 cores, and system_profiler SPHardwareDataType seems to agree. Can you explain the discrepancy?
– Joshua Flanagan
Sep 24 '11 at 1:42
...