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Unexpected results when working with very big integers on interpreted languages
...supports arbitrary precision. It will produce the correct answer on 32 or 64 bit platforms.
This can be seen by raising 2 to a power far greater than the bit width of the platform:
>>> 2**99
633825300114114700748351602688L
You can demonstrate (with Python) that the erroneous values you...
从异构软件开发者的角度看异构计算 - 操作系统(内核) - 清泛网 - 专注C/C++...
...所有平台，而更可悲的是他们完全可以统一！所以OpenCL[4]出现了！OpenCL是一种统一的标准，它可以实现在不同硬件厂商的平台的兼容的编写程序。并且我们可以统一将除了CPU以外的属于同一个计算机系统的其它计算单元称为协处...
Do zombies exist … in .NET?
...
244
Is there a clearer definition of a "zombie thread" than what I've explained here?
Seems like...
How to navigate to a directory in C:\ with Cygwin?
I'm trying to install PyQt4 so I can mess around with it. The installation guide said I had to install Sip . The last step to installing Sip is to use the make install command. Windows doesn't have that, so I looked it up and everything I saw said to install Cygwin. So I did. But...sip is in ...
Detect if Visual C++ Redistributable for Visual Studio 2012 is installed
...orked well for me with their corresponding versions to download for Update 4. Please be aware that some of these reg locations may be OS-dependent. I collected this info from a Windows 10 x64 box. I'm just going to go ahead and dump all of these redist versions and the reg keys I search for to detec...
Windows recursive grep command-line
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Zitrax
14.9k1313 gold badges7777 silver badges9393 bronze badges
answered Mar 30 '09 at 16:50
Michael BurrMic...
What does send() do in Ruby?
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answered Jul 26 '10 at 18:49
giraffgiraff
3,85911 gold badge2020 silver badges3333 bronze badges
...
How to apply a function to two columns of Pandas dataframe
...s Series object, and then index the Series to get the values needed.
In [49]: df
Out[49]:
0 1
0 1.000000 0.000000
1 -0.494375 0.570994
2 1.000000 0.000000
3 1.876360 -0.229738
4 1.000000 0.000000
In [50]: def f(x):
....: return x[0] + x[1]
....:
In [51]:...
Scheduling R Script
...t.exe which should be placed e.g. here:
"C:\Program Files\R\R-3.0.2\bin\x64\Rscript.exe"
input the name of your file in the parameters field
input the path where the script is to be found in the Start in field
go to the Triggers tab
create new trigger
choose that task should be done each day, month...