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Cannot install node modules that require compilation on Windows 7 x64/VS2012
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This worked amazingly with my Windows 7 x64 install! Thanks Microsoft (for being dicks)!
– Blairg23
Oct 9 '14 at 16:19
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Can I install Python windows packages into virtualenvs?
... I tried to do this, but got an error wheel convert numpy-MKL-1.8.1.win-amd64-py2.7.exe then pip install numpy-1.8.1-cp27-none-win_amd64.whl i get the following error Downloading/unpacking numpy-1.8.1-cp27-none-win-amd64.whl Could not find any downloads that satisfy the requirement numpy-1.8.1-cp...
内存优化总结:ptmalloc、tcmalloc和jemalloc - 操作系统(内核) - 清泛网 - ...
...glibc malloc版本。
ptmalloc原理
系统调用接口
上图是 x86_64 下 Linux 进程的默认地址空间, 对 heap 的操作, 操作系统提供了brk()系统调用，设置了Heap的上边界； 对 mmap 映射区域的操作,操作系 统 供了 mmap()和 munmap()函数。
因为系统...
How to escape single quotes in MySQL
...QL 5.6 or later because of the use of a specific string function: FROM_BASE64.
Let's say you have this message you'd like to insert:
"Ah," Nearly Headless Nick waved an elegant hand, "a matter of no importance. . . . It's not as though I really wanted to join. . . . Thought I'd apply, but apparentl...
Git Extensions: Win32 error 487: Couldn't reserve space for cygwin's heap, Win32 error 0
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I don't have rebase.exe on my Win10 64 Bit Pro, but calling the following did the trick (VS2010): "C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\bin\amd64\editbin.exe" /REBASE:BASE=0x50000000 msys-1.0.dll
– Paul Bußmann
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How does Hadoop process records split across block boundaries?
...f each 100Mb in the same file, and to simplify let's say the split size is 64Mb. Then when the input splits are calculated, we will have the following scenario:
Split 1 containing the path and the hosts to this block. Initialized at start 200-200=0Mb, length 64Mb.
Split 2 initialized at start 200-...
Suppress Scientific Notation in Numpy When Creating Array From Nested List
... numbers:
print(a) #prints [0.000010 22.000000 1234567799999999979944197226496.000000]
We've force-suppressed the exponential notation, but it is not rounded or justified, so specify extra formatting options:
np.set_printoptions(suppress=True,
formatter={'float_kind':'{:0.2f}'.format}) #flo...
Windows 7 SDK installation failure
...01, 2011: C:\Program Files\Microsoft SDKs\Windows\v7.1\Setup\SFX\vcredist_x64.exe installation failed with return code 5100
so as that above web page suggested, I uninstalled both copies of the Visual C++ 2010 Redistributable Package that I had (both x86 and x64), and then when I ran the Windows 7...
How many double numbers are there between 0.0 and 1.0?
...on between powers of two is linear, you could say that said range is 0.1 / 64th of the span between the surrounding powers of two (64 and 128), so you'd expect about
(0.1 / 64) * 2**52
distinct doubles -- which comes to 7036874417766.4004... give or take one or two;-).
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google oauth2 redirect_uri with several parameters
...on string of your parameters ->
{ "a" : "b" , "c" : 1 }
/2. do a base64UrlEncode , to make it URL safe ->
stateString = base64UrlEncode('{ "a" : "b" , "c" : 1 }');
This is a PHP example of base64UrlEncoding & decoding (http://en.wikipedia.org/wiki/Base64#URL_applications) :
functi...