大约有 48,000 项符合查询结果（耗时：0.0715秒） [XML]
Can I access constants in settings.py from templates in Django?
...quently-used settings constants to the template such as settings.MEDIA_URL and some of the language settings if you use django's built in generic views or pass in a context instance keyword argument in the render_to_response shortcut function. Here's an example of each case:
from django.shortcuts ...
How to suppress Update Links warning?
...
UPDATE:
After all the details summarized and discussed, I spent 2 fair hours in checking the options, and this update is to dot all is.
Preparations
First of all, I performed a clean Office 2010 x86 install on Clean Win7 SP1 Ultimate x64 virtual machine powered by...
How to count number of files in each directory?
...
Assuming you have GNU find, let it find the directories and let bash do the rest:
find . -type d -print0 | while read -d '' -r dir; do
files=("$dir"/*)
printf "%5d files in directory %s\n" "${#files[@]}" "$dir"
done
...
How to remove unused C/C++ symbols with GCC and ld?
I need to optimize the size of my executable severely ( ARM development) and
I noticed that in my current build scheme ( gcc + ld ) unused symbols are not getting stripped.
...
Using Django time/date widgets in custom form
How can I use the nifty JavaScript date and time widgets that the default admin uses with my custom view?
16 Answers
...
How to disallow temporaries
...macro-based solution:
#define Foo class Foo
The statement Foo("hi"); expands to class Foo("hi");, which is ill-formed; but Foo a("hi") expands to class Foo a("hi"), which is correct.
This has the advantage that it is both source- and binary-compatible with existing (correct) code. (This claim is...
Are 2^n and n*2^n in the same time complexity?
... answer this question.
The definition is that f(x) belongs to O(g(x)) if and only if the limit limsupx → ∞ (f(x)/g(x)) exists i.e. is not infinity. In short this means that there exists a constant M, such that value of f(x)/g(x) is never greater than M.
In the case of your question let f(n) ...
How to compare arrays in JavaScript?
..... ideally, efficiently. Nothing fancy, just true if they are identical, and false if not. Not surprisingly, the comparison operator doesn't seem to work.
...
How does Go compile so quickly?
I've Googled and poked around the Go website, but I can't seem to find an explanation for Go's extraordinary build times. Are they products of the language features (or lack thereof), a highly optimized compiler, or something else? I'm not trying to promote Go; I'm just curious.
...
FFMPEG (libx264) “height not divisible by 2”
...not want to scale the video is:
-vf "pad=ceil(iw/2)*2:ceil(ih/2)*2"
Command:
ffmpeg -r 24 -i frame_%05d.jpg -vcodec libx264 -y -an video.mp4 -vf "pad=ceil(iw/2)*2:ceil(ih/2)*2"
Basically, .h264 needs even dimensions so this filter will:
Divide the original height and width by 2
Round it up t...