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How do I install an old version of Django on virtualenv?
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There was never a Django 1.0.7. The 1.0 series only went up to 1.0.4. You can see all the rele...
Associativity of “in” in Python?
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1 in [] in 'a' is evaluated as (1 in []) and ([] in 'a').
Since the first condition (1 in []...
CPU Privilege Rings: Why rings 1 and 2 aren't used?
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114
As a hobbyist operating system writer, I found that because paging (a major part of the modern...
Determine the path of the executing BASH script [duplicate]
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166
For the relative path (i.e. the direct equivalent of Windows' %~dp0):
MY_PATH="`dirname \"$0\...
Why is printing to stdout so slow? Can it be sped up?
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How can it be that writing to physical disk is WAY faster than writing to the "screen" (pre...
Simple way to create matrix of random numbers
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Resizing SVG in html?
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185
Open your .svg file with a text editor (it's just XML), and look for something like this at th...
Check if a number has a decimal place/is a whole number
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Using modulus will work:
num % 1 != 0
// 23 % 1 = 0
// 23.5 % 1 = 0.5
Note that this is based on the numerical value of the number, regardless of format. It treats numerical strings containing whole numbers with a fixed decimal point the same as intege...
Linux的诞生和发展 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...Linux 操作系统是UNIX 操作系统的一种克隆系统。它诞生于1991 年的10 月5 日（这是第一次正式向外公布的时间...Linux 的诞生和发展
Linux 操作系统是UNIX 操作系统的一种克隆系统。它诞生于1991 年的10 月5 日（这是第一次正式向外公...