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Django: How to completely uninstall a Django app?
What is the procedure for completely uninstalling a Django app, complete with database removal?
5 Answers
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Override Java System.currentTimeMillis for testing time sensitive code
... current time, as presented via System.currentTimeMillis , other than manually changing the system clock on the host machine?
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TLSF源码及算法介绍 - 开源 & Github - 清泛网 - 专注C/C++及内核技术
...及时。英文好的同学请直接看论文《TLSF: a New Dynamic Memory Allocator f 官网地址：http://www.gii.upv.es/tlsf/
官网的代码应该是主分支，github上的几个仓库更新不是那么及时。
英文好的同学请直接看论文《TLSF: a New Dynamic Memory Allocator fo...
Determining Referer in PHP
...s the most reliable and secure way to determine what page either sent, or called (via AJAX), the current page. I don't want to use the $_SERVER['HTTP_REFERER'] , because of the (lack of) reliability, and I need the page being called to only come from requests originating on my site.
Edit: I am...
Complete Working Sample of the Gmail Three-Fragment Animation Scenario?
...at I'll refer to as "the Gmail three-fragment animation" scenario. Specifically, we want to start with two fragments, like this:
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What are Runtime.getRuntime().totalMemory() and freeMemory()?
...Memory()
Returns the amount of free memory in the Java Virtual Machine. Calling the gc method may result in increasing the value returned by freeMemory.
In reference to your question, maxMemory() returns the -Xmx value.
You may be wondering why there is a totalMemory() AND a maxMemory(). The an...
Principal component analysis in Python
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Months later, here's a small class PCA, and a picture:
#!/usr/bin/env python
""" a small class for Principal Component Analysis
Usage:
p = PCA( A, fraction=0.90 )
In:
A: an array of e.g. 1000 observations x 20 variables, 1000 rows x 20 colum...
One-liner to check whether an iterator yields at least one element?
... Similarly if you need to check if the iterator is empty, one could use all(False for _ in iterator) will check if the iterator is empty. (all returns True if the iterator is empty, otherwise it stops when it sees the first False element)
– KGardevoir
Apr 3 ...
How to turn on front flash light programmatically in Android?
I want to turn on front flash light (not with camera preview) programmatically in Android. I googled for it but the help i found referred me to this page
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Elegant ways to support equivalence (“equality”) in Python classes
When writing custom classes it is often important to allow equivalence by means of the == and != operators. In Python, this is made possible by implementing the __eq__ and __ne__ special methods, respectively. The easiest way I've found to do this is the following method:
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