大约有 48,000 项符合查询结果（耗时：0.0655秒） [XML]
Meaning of = delete after function declaration
...'t the traditional method to "prohibit copying" just to make the copy-ctor and operator= "private?" This goes a bit further and instructs the compiler to not even generate the functions. If they're both private and =delete, is copying doubly-prohibited?
– Reb.Cabin
...
Checkout another branch when there are uncommitted changes on the current branch
... Git version 2.13, to fix up some problems with the arguments to git stash and allow for new options. Both do the same thing, when used in the basic ways.
You can stop reading here, if you like!
If Git won't let you switch, you already have a remedy: use git stash or git commit; or, if your chan...
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
...
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) ...
Lightweight SQL editor for Eclipse [closed]
...lipse SQL Editor seems very lightweight. It only does syntax highlighting and provides an outline view. As of now the author is planning to eventually add code folding and completion, but those two features are still on the todo list.
...
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 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...
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...
Resumable downloads when using PHP to send the file?
...tent. Then, if request with a Range: bytes=x-y header is received (with x and y being numbers) you parse the range the client is requesting, open the file as usual, seek x bytes ahead and send the next y - x bytes. Also set the response to HTTP/1.0 206 Partial Content.
Without having tested anythi...
Virtual Memory Usage from Java under Linux, too much memory used
...
This has been a long-standing complaint with Java, but it's largely meaningless, and usually based on looking at the wrong information. The usual phrasing is something like "Hello World on Java takes 10 megabytes! Why does it need that?" Well, here...