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R command for setting working directory to source file location in Rstudio
I am working out some tutorials in R. Each R code is contained in a specific folder. There are data files and other files in there. I want to open the .r file and source it such that I do not have to change the working directory in Rstudio as shown below:
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Socket send函数和recv函数详解以及利用select()函数来进行指定时间的阻塞 ...
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通过重叠通信和计算在许多系统能提高性能。由一个智能通信控制器自动地执行通信的系统是真实的。轻－重线索是取得这 种重叠的一种机制。导致好性能的 一个可选的机制是使用非阻塞通信。一个阻塞发送开始调用初始...
创业测试：50个迹象表明你真该创业了 - 资讯 - 清泛网 - 专注C/C++及内核技术
...就开始工作吧。你或许需要打消购买心仪笔记本电脑或是智能手机的计划。
42.你悟出自己希望看到结果。当为别人工作时，你很难了解到你所有的辛勤工作是怎样为公司带来利润的。如果你想要看到自己动作过后的直接结果的...
Action bar navigation modes are deprecated in Android L
... the Google provided examples SlidingTabsBasic or SlidingTabsColors as explained in this Dev Bytes video.
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Horizontal ListView in Android?
...ith LayoutManager are fixed by google. code.google.com/p/android/issues/detail?id=74772
– Ponsuyambu Velladurai
Jun 15 '15 at 17:53
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How to configure git bash command line completion?
...d before, then the above steps will work.
– patapouf_ai
Oct 21 '16 at 13:46
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Doing HTTP requests FROM Laravel to an external API
... answered Feb 2 '15 at 16:04
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How to check that a string is an int, but not a double, etc.?
... for non-numeric strings: is_int("abc"+0) is true
– Kai Pommerenke
Jan 29 '13 at 18:07
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True, it...
What does %~d0 mean in a Windows batch file?
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The magic variables %n contains the arguments used to invoke the file: %0 is the path to the bat-file itself, %1 is the first argument after, %2 is the second and so on.
Since the arguments are often file paths, there is some additional syntax to extr...
vs2008编译boost详细步骤 - 开源 & Github - 清泛网 - 专注C/C++及内核技术
...到Python之中；
（9）Pool，内存池管理；
（10）smart_ptr，智能指针。
【二、Boost库的编译】
【Setp1 准备工作】：
（1）Boost 下载可以到官方网站下载：
http://www.boost.org/
（2）安装VS2008 IDE
【Setp2 编译Boost】
1.打开Visual S...