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微博为什么限制140字(附短信70字限制考) - 创意 - 清泛网 - 专注C/C++及内核技术

...制从已经逝去的“吃饭了吗 (update:它已经复活了)”开始把140字沿用至今,成为一个不成文的规定,没什么特别的就不需要改,倒是网易在这一点上走了个歪路。 当然不只我一个纠结过这个问题,这篇关于中文微博140字的博文分...
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Debug Error \"pure virtual function call\" 原因解析 - 更多技术 - 清泛...

...绝是指不强制在析构函数中去swallow莫须有的异常,而是把可能的问题暴露出来才便于解决。比如上面提到的那个现实中的例子,通过抛出异常,然后调用pure virtual function call把问题暴露出来,我们就可以着手研究为什么会抛出异...
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WakeLock 扩展:保持设备唤醒扩展,防止系统休眠和电池优化 · App Inventor 2 中文网

...链接 扩展文件: de.UllisRoboterSeite.UrsAI2WakeLock.aix 示例文件: UrsWakeLockTest.aia 功能概述 扩展特性 CPU 唤醒锁:防止 CPU 被系统关闭 WiFi 唤醒锁:保持 WiFi 连接不断开 屏幕唤醒...
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创建自定义 TinyWebDB 服务 · App Inventor 2 中文网

...pEngineLauncher by clicking its icon. Download this sample code. It is a zip file containg the source code for your custom tinywebdb web service Unzip the downloaded zip file. It will create a folder named customtinywebdb . You can rename it if you want. In the ...
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Wireshark localhost traffic capture [closed]

... and on Digital/Tru64 UNIX, and you might be able to do it on Irix and AIX, but you definitely cannot do so on Solaris, HP-UX.... Although the page mentions that this is not possible on Windows using Wireshark alone, you can actually record it using a workaround as mentioned in a different...
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Using Excel OleDb to get sheet names IN SHEET ORDER

...ther way: a xls(x) file is just a collection of *.xml files stored in a *.zip container. unzip the file "app.xml" in the folder docProps. <?xml version="1.0" encoding="UTF-8" standalone="true"?> -<Properties xmlns:vt="http://schemas.openxmlformats.org/officeDocument/2006/docPropsVTypes" x...
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Append lines to a file using a StreamWriter

...eStream.Seek worked for my case. Thanks Jon! I needed to append lines to a zip archived txt file. using (FileStream zipFS = new FileStream(@"c:\Temp\SFImport\test.zip",FileMode.OpenOrCreate)) { using (ZipArchive arch = new ZipArchive(zipFS,ZipArchiveMode.Update)) { ZipArchiveEntry e...
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SEH stack 结构探索(1)--- 从 SEH 链的最底层(线程第1个SEH结构)说起 -...

...,使用人工设置 stack frame 是有目的的,最终这块区域将变成一个 EXCEPTION_REGISTRATION_RECORD 结构,将 ebp 移至 esp + 10 处,也就是ntdll32!_SEH_prolog4() 的第 1 个参数(14h 处) 这时的 stack 图如下: 接下着看看下面几行代码: ...
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C++对象布局及多态探索之菱形结构虚继承 - C/C++ - 清泛网 - 专注C/C++及内核技术

...运算为: [ebp+ecx+FFFFF7F0h+4h],编译器在生成代码时会直接把最后一步运算做掉。   我们再看一个例子,这个例子的继承结构和上一篇中是一样的,也是菱形结构。不同的是,每一个类都重写了顶层类声明的 虚函数 。代码如...
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Code equivalent to the 'let' keyword in chained LINQ extension method calls

...ee that new random samples show up every time, consider the following seq.Zip(seq, Tuple.Create).Take(3).Dump(); which produces pairs in which the left and right are different. To produce pairs in which the left and right are always the same, do something like the following: seq.Take(3).ToList()...