大约有 47,000 项符合查询结果（耗时：0.0804秒） [XML]
How do I convert a Django QuerySet into list of dicts?
...;> Blog.objects.values()
[{'id': 1, 'name': 'Beatles Blog', 'tagline': 'All the latest Beatles news.'}],
>>> Blog.objects.values('id', 'name')
[{'id': 1, 'name': 'Beatles Blog'}]
Note: the result is a QuerySet which mostly behaves like a list, but isn't actually an instance of list. Us...
Unpacking array into separate variables in JavaScript
...nd I've done it before. I just can't remember how, or what exactly it was called.
7 Answers
...
How to set margin of ImageView using code, not xml
...
All the above examples will actually REPLACE any params already present for the View, which may not be desired. The below code will just extend the existing params, without replacing them:
ImageView myImage = (ImageView) fin...
Java Can't connect to X11 window server using 'localhost:10.0' as the value of the DISPLAY variable
... well sometime - it won't work on linux then its good to install Xvfb with apt and run it on any screen like: Xvfb :1 and then set variable in build phase -- export DISPLAY=:1 --> this perfectly works.
– Pankaj Kumar Katiyar
Sep 22 '18 at 3:39
...
C# loop - break vs. continue
...
A really easy way to understand this is to place the word "loop" after each of the keywords. The terms now make sense if they are just read like everyday phrases.
break loop - looping is broken and stops.
continue loop - loop ...
Window vs Page vs UserControl for WPF navigation?
...at you can add to your UI the same way you would add any other control. Usually I create a UserControl when I want to build in some custom functionality (for example, a CalendarControl), or when I have a large amount of related XAML code, such as a View when using the MVVM design pattern.
When navi...
Resizing an image in an HTML5 canvas
...
So what do you do if all the browsers (actually, Chrome 5 gave me quite good one) won't give you good enough resampling quality? You implement them yourself then! Oh come on, we're entering the new age of Web 3.0, HTML5 compliant browsers, super ...
How can I get the current user's username in Bash?
...
In some cases, $USER is not set at all. Worse, it is just an environment variable, so it can be overridden by the user: USER=thisisnotmyname bash -c 'echo $USER' # prints thisisnotmyname
– sitaktif
Dec 17 '15 at 13:20
...
How to display the function, procedure, triggers source code in postgresql?
...
\df+ outputs a lot more than the code. If all you want is the code, \sf will do the trick!
– Telic
May 10 '17 at 22:47
...
Can I have multiple :before pseudo-elements for the same element?
... when you have multiple :before rules matching the same element, they will all cascade and apply to a single :before pseudo-element, as with a normal element. In your example, the end result looks like this:
.circle.now:before {
content: "Now";
font-size: 19px;
color: black;
}
As you ...