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搭建高可用mongodb集群（二）—— 副本集 - 大数据 & AI - 清泛网 - 专注C/...
...装程序包
wget http://fastdl.mongodb.org/linux/mongodb-linux-x86_64-2.4.8.tgz
注意linux生产环境不能安装32位的mongodb，因为32位受限于操作系统最大2G的文件限制。
#解压下载的压缩包
tar xvzf mongodb-linux-x86_64-2.4.8.tgz
4、分别在每...
Setting an int to Infinity in C++
...:numeric_limits<int>::max();
Which would be 2^31 - 1 (or 2 147 483 647) if int is 32 bits wide on your implementation.
If you really need infinity, use a floating point number type, like float or double. You can then get infinity with:
double a = std::numeric_limits<double>::infinity...
What’s the best way to check if a file exists in C++? (cross platform)
...is not C++ standard though, but POSIX.
On MS Windows there is _stat, _stat64, _stati64, _wstat, _wstat64, _wstati64.
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VSTS 2010 SGEN : error : Could not load file or assembly (Exception from HRESULT: 0x80131515)
...
Note that if it's a 64 bit machine you need to create under ...\Bin\NETFX 4.0 Tools\x64\
– Vivek Ayer
Oct 21 '13 at 8:36
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Access to the path is denied
...the file name.
Old Code
File.WriteAllBytes(@"E:\Folder", Convert.FromBase64String(Base64String));
Working Code
File.WriteAllBytes(@"E:\Folder\"+ fileName, Convert.FromBase64String(Base64String));
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How do I install Python packages on Windows?
...the only one that worked for me. My environment - Python 3.3.1 , Windows 7 64bit, x64 PC. if possible, please upvote this, saves ppl a lot of trouble.
– Quest Monger
May 10 '13 at 1:54
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Where does gcc look for C and C++ header files?
...og-name=cpp) -v (correctly) gives one more path, which is /usr/include/x86_64-linux-gnu
– wlnirvana
May 6 '16 at 15:10
3
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“unrecognized import path” with go get
...o bash everything went ok.
Here is my go env
bash-3.2$ go env
GOARCH="amd64"
GOBIN=""
GOCHAR="6"
GOEXE=""
GOHOSTARCH="amd64"
GOHOSTOS="darwin"
GOOS="darwin"
GOPATH="/Users/bis/go"
GORACE=""
GOROOT="/usr/local/go"
GOTOOLDIR="/usr/local/go/pkg/tool/darwin_amd64"
CC="clang"
GOGCCFLAGS="-fPIC -m64 -pt...
How can I convert String to Int?
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What if the integer is 64 bit, or looks like "aslkdlksadjsd"? Is this still safe?
– Jonny
Dec 10 '14 at 10:11
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Append a NumPy array to a NumPy array
... np.append(M,b) array([ 2., 3., 4.]) >>> M array([], dtype=float64) I was hoping M to be a 2D array??
– frazman
Mar 19 '12 at 18:06
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