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How can you determine a point is between two other points on a line segment?
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The length of the segment is not important, thus using a square root is not required and should be avoided since we could lose some precision.
class Point:
def __init__(self, x, y):
self.x = x
self.y = y
class Segment:
def __init__(self, a, b):
self.a = a...
Is Big O(logn) log base e?
...derivation part of the analysis. The terse answers which don't address the root cause of the misunderstanding may lead to further misunderstanding. It's bad pedagogy.
– Heath Hunnicutt
Oct 15 '09 at 1:16
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How to give ASP.NET access to a private key in a certificate in the certificate store?
...cation.LocalMachine);
serverCert = GetCertificateIfExist("CN=MyROOTCA", StoreName.Root, StoreLocation.LocalMachine);
if (clientCert == null || serverCert == null)
{
var caCert = GenerateCACertificate("CN=MyROOTCA", ref caPrivateKey);
...
Unique fields that allow nulls in Django
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For my project, I dumped this into an extras.py file that lives in the root of my site, then I can just from mysite.extras import CharNullField in my app's models.py file. The field acts just like a CharField - just remember to set blank=True, null=True when declaring the field, or otherwise Dj...
App Inventor 2 连接方式：AI伴侣、模拟器、USB · App Inventor 2 中文网
...了三星手机样式，屏幕及分辨率较高。
Q：商业模拟器如何使用？
A：步骤如下：
电脑网页上搜索MuMu，下载最新版模拟器。
启动后，在模拟器设置中设置为手机模式，选择适合自己的分辨率。
帮助菜单 ...
XPath contains(text(),'some string') doesn't work when used with node with more than one Text subnod
...n:
//*[contains(text(), 'ABC')]
//* matches any descendant element of the root node. That is, any element but the root node.
[...] is a predicate, it filters the node-set. It returns nodes for which ... is true:
A predicate filters a node-set [...] to produce a new node-set. For each node in the n...
Emacs Ruby autocomplete almost working
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Here's a thought: The macro binds a flet function (rails-project:root) one time to the value that (rails-project:root) has just before the body executes. (That's how it claims a performance increase: Apparently the outer (rails-project:root) is expensive, so calling once and caching the va...
Lost httpd.conf file located apache [closed]
..._CONFIG_FILE="apache2.conf" You can run "/usr/sbin/apache2 -V | grep HTTPD_ROOT" to find the root. Output: "-D HTTPD_ROOT="/etc/apache2/apache2.conf" The absolute path will be then : "/etc/apache2/apache2.conf"
– Mayank Jaiswal
Oct 27 '13 at 14:56
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Linux查看哪些进程被OOM killer干掉 - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术
...-linux-oom-killergrep -i & 39;killed process& 39; var log messages 需要root权限dmesg -T | egrep -i & 39;killed process& 39; 无需知道日志位置，无需root权
grep -i 'killed process' /var/log/messages #需要root权限
dmesg -T | egrep -i 'killed process' #无需...
How does one parse XML files? [closed]
... specific element, you can access child elements with the indexer: xmlDoc["Root"], and these can be chained: xmlDoc["Root"]["Folder"]["Item"] to dig down the hierarchy (although it's sensible to validate that these elements actually exist)
– Jason Williams
Mar ...