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Linux的诞生和发展 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...为这样他就可以待在家里摆弄他的计算机了。MINIX 是他1987年编制的，主要用于学生学习操作系统原理。到91年时版本是1.5。目前主要有两个版本在使用： 1.5 版和2.0 版，当时该操作系统在大学使用是免费的，但其它用途不是，当...
When to wrap quotes around a shell variable?
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edited Feb 8 '18 at 11:15
Gilles 'SO- stop being evil'
87.9k2424 gold badges184184 silver badges224224 bronze badges
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How to use a decimal range() step value?
...linspace(0,1,11)
array([ 0. , 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 1. ])
>>> np.linspace(0,1,10,endpoint=False)
array([ 0. , 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9])
If you really want to use a floating-point step value, you can, with numpy.arange.
>>...
HTTP could not register URL http://+:8000/HelloWCF/. Your process does not have access rights to thi
...However, it used to lead to http://msdn.microsoft.com/en-us/library/ms733768.aspx which explains how to set the permissions.
It basically informs you to use the following command:
netsh http add urlacl url=http://+:80/MyUri user=DOMAIN\user
You can get more help on the details using the help of n...
How do I get a list of all the duplicate items using pandas in python?
... TRAINER_OPERATOR FIRST_VISIT_DATE
24 11795 27-Feb-12 0643D38-Hanover NH 0643D38-Hanover NH 19-Jun-12
6 11795 3-Jul-12 0649597-White River VT 0649597-White River VT 30-Mar-12
18 8096 19-Dec-11 0649597-White River VT 0649597-White River VT ...
What are the differences between the threading and multiprocessing modules?
...ess from running Python code at the same time. This means that if you have 8 cores, and change your code to use 8 threads, it won't be able to use 800% CPU and run 8x faster; it'll use the same 100% CPU and run at the same speed. (In reality, it'll run a little slower, because there's extra overhead...
Hand Coded GUI Versus Qt Designer GUI [closed]
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edited Aug 5 '16 at 8:41
feedc0de
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answered...
How do I create an HTML table with a fixed/frozen left column and a scrollable body?
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If you want a table where only the columns scroll horizontally, you can position: absolute the ...
How to remove trailing whitespace of all files recursively?
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Here is an OS X >= 10.6 Snow Leopard solution.
It Ignores .git and .svn folders and their c...
Javascript: How to loop through ALL DOM elements on a page?
...e that you could use querySelectorAll(), if it's available (IE9+, CSS in IE8), to just find elements with a particular class.
if (document.querySelectorAll)
var clsElements = document.querySelectorAll(".mySpeshalClass");
else
// loop through all elements instead
This would certainly speed u...