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Set default CRAN mirror permanent in R
... it exists (which it does not in a 'factory-fresh' installation).
So do Sys.getenv("R_PROFILE") for the first option, or Sys.getenv("R_HOME") or R.home() for the second option. On macOS, the location of the second is /Library/Frameworks/R.framework/Resources/etc/.
The file may not exist, or you ...
REDHAT 6.4 X64下ORACLE 11GR2静默安装 - 数据库(内核) - 清泛网 - 专注C/C++及内核技术
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libaio
libaio-devel
libgcc
libgomp
libstdc++
libstdc++-devel
make
sysstat
unixODBC
unixODBC-devel使用vi 命令创建一个文本文件，上面的名称直接复制进去就好
使用上传工具把 linux，oracle的安装包上传到/MNT/ISO目录下
我推荐使用 XME4 企...
Move capture in lambda
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Note that in Visual Studio 2013, converting a std::bind to a std::function still results in it copying all the bound variables (myPointer in this case). Therefore the above code does not compile in VS2013. It woks fine in GCC 4.8 though.
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Why shouldn't I use “Hungarian Notation”?
...s marked unsafe, so that it simply cannot be passed to a safe function. To convert from unsafe to safe should require processing with some kind of a sanitize function.
A lot of the things that Joel talks of as "kinds" are not kinds; they are, in fact, types.
What most languages lack, however, is a...
Convert a list of characters into a string
... the reason for this: in my program I recv a list of int from network then convert to string where map(ord,a) is unnecessary, but join needs map(chr,a). Here's my benchmark pastebin.com/1sKFm8ma
– bigeagle
Apr 8 '12 at 15:11
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Explain Python entry points?
...point use: it will install something like a half-dozen useful commands for converting Python documentation to other formats.
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Reading specific lines only
...gt;> import linecache
>>> linecache.getline('/etc/passwd', 4)
'sys:x:3:3:sys:/dev:/bin/sh\n'
Change the 4 to your desired line number, and you're on. Note that 4 would bring the fifth line as the count is zero-based.
If the file might be very large, and cause problems when read into m...
How to check if a string contains an element from a list in Python
...ll known help flags: any([x.lower() in ['-?','-h','--help', '/h'] for x in sys.argv[1:]])
– AXE Labs
May 29 '14 at 20:04
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How to add a string to a string[] array? There's no .Add function
I'd like to convert the FI.Name to a string and then add it to my array. How can I do this?
13 Answers
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Boolean vs boolean in Java
... on 3rd line (bar)?1:0 illustrates that bar (boolean) cannot be implicitly converted (casted) into an int. I am bringing this up not to illustrate the details of implementation behind JVM, but to point out that in terms of low level considerations (as memory size) one does have to prefer values over...