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Django database query: How to get object by id?
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If you want to get an object, using get() is more straightforward:
obj = Class.objects.get(pk=this_object_id)
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Separation of business logic and data access in django
...an find the business logic and entities as perceived by your end user, the former is where you actually store your data.
Furthermore, I've interpreted the 3rd part of your question as: how to notice failure to keep these models separate.
These are two very different concepts and it's always hard to ...
Git Bash is extremely slow on Windows 7 x64
...tu during the development of a small project, frequently flipping back and forth between the two. The issue is that Git Bash consistently becomes slow.
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How can I get the current screen orientation?
...s the rotation with reference to the display's "natural" orientation, i.e. for a tablet it would return Surface.ROTATION_0 in landscape mode, whereas for a mobile phone it would return the same value for portrait.
– Zoltán
Apr 30 '12 at 8:40
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Efficient Algorithm for Bit Reversal (from MSB->LSB to LSB->MSB) in C
...e256[p[3]];
You can extend this idea to 64-bit ints, or trade off memory for speed (assuming your L1 Data Cache is large enough), and reverse 16 bits at a time with a 64K-entry lookup table.
Others
Simple
unsigned int v; // input bits to be reversed
unsigned int r = v & 1; // r will b...
How to pick just one item from a generator?
... next(gen, default) may also be used to avoid the StopIteration exception. For example next(g, None) for a generator of strings will either yield a string or None after the iteration was finished.
– Attila
Mar 6 '13 at 14:18
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Android - Camera preview is sideways
... how I implement it:
public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) {
if (isPreviewRunning) {
mCamera.stopPreview();
}
Parameters parameters = mCamera.getParameters();
Display display = ((WindowManager)getSystemService(WINDOW...
Rails check if yield :area is defined in content_for
...ring at the layout level based on the actual template has defined content_for(:an__area) , any idea how to get this done?
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rgdal package installation
...package page on CRAN, you will see the following :
SystemRequirements: for building from source: GDAL >= 1.7.1 library
from http://trac.osgeo.org/gdal/wiki/DownloadSource and PROJ.4 (proj >= 4.4.9) from http://trac.osgeo.org/proj/; GDAL OSX frameworks built by William Kyngesburye at http...
c++ 写日志通用类，可设置日志级别 - C/C++ - 清泛网 - 专注C/C++及内核技术
...。代码经过较长时间的测试，可用性高。Logger.h
#ifndef __LOGGER_H_
#define __LOGGER_H_
#include <iostream>
#include <atlstr.h>
#pragma warning(disable:4996)
#define LEVEL_FATAL 0
#define LEVEL_ERROR 1
#define LEVEL_WARN 2
#define LEVEL_INFO 3
#define LEVEL_VERBOSE...