大约有 35,458 项符合查询结果(耗时:0.0502秒) [XML]

https://stackoverflow.com/ques... 

Install specific git commit with pip

...+git://github.com/aladagemre/django-notification.git@2927346f4c513a217ac8ad076e494dd1adbf70e1 branch-name With git $ pip install git+git://github.com/aladagemre/django-notification.git@cool-feature-branch or from source bundle $ pip install https://github.com/aladagemre/django-notification/ar...
https://stackoverflow.com/ques... 

What does new self(); mean in PHP?

...getInstance(); var_dump($a); Here, you'll get : object(MyChildClass)#1 (0) { } Which means self means MyChildClass -- i.e. the class in which it is written. For the second situation, the code would look like this : class MyParentClass { public static function getInstance() { ret...
https://stackoverflow.com/ques... 

Append an object to a list in R in amortized constant time, O(1)?

... R> That works on vectors too, so do I get the bonus points? Edit (2015-Feb-01): This post is coming up on its fifth birthday. Some kind readers keep repeating any shortcomings with it, so by all means also see some of the comments below. One suggestion for list types: newlist <- list(ol...
https://stackoverflow.com/ques... 

Default value for field in Django model

...e/ref/models/fields/#editable b = models.CharField(max_length=7, default='0000000', editable=False) Also, your id field is unnecessary. Django will add it automatically. share | improve this ans...
https://stackoverflow.com/ques... 

Rails: Logging the entire stack trace of an exception

... 208 If you look at the source for the BufferedLogger class in ActiveSupport, you'll see that the se...
https://stackoverflow.com/ques... 

Is there a reason that we cannot iterate on “reverse Range” in ruby?

... 100 A range is just that: something defined by its start and end, not by its contents. "Iterating" ...
https://stackoverflow.com/ques... 

Static member initialization in a class template

... | edited Jul 12 '10 at 17:07 answered Jul 12 '10 at 15:48 ...
https://stackoverflow.com/ques... 

How does lombok work?

... answered May 24 '11 at 23:04 rzwitserlootrzwitserloot 20.6k33 gold badges1919 silver badges2323 bronze badges ...
https://stackoverflow.com/ques... 

Bash if [ false ] ; returns true

... answered Oct 29 '13 at 22:06 chepnerchepner 357k4646 gold badges352352 silver badges475475 bronze badges ...
https://www.fun123.cn/reference/iot/UDP.html 

App Inventor 2 UrsAI2UDP 拓展 - UDP广播通信协议 · App Inventor 2 中文网

...可以双向传输数据。 注意: 在 UNIX 系统上,系统保留 1023(含)以下的端口号。这些限制已保留用于 LINUX,因此也用于 Android。使用这些端口号需要 root 授权。这同样适用于 Apple 的 iOS。 因此,此扩展无法使用低于 1024 的端口...