大约有 47,000 项符合查询结果(耗时:0.0452秒) [XML]

https://stackoverflow.com/ques... 

How do I install from a local cache with pip?

... downloaded and added to the PIP_DOWNLOAD_CACHE directory. For instance, I now have quite a few Django packages. This doesn't remove the need for network access, as stated in the pip news, so it's not the answer for creating new virtualenvs on the airplane, but it's still great. ...
https://stackoverflow.com/ques... 

When a 'blur' event occurs, how can I find out which element focus went *to*?

... Now it has. See here. – rplaurindo Dec 2 '16 at 5:05 1 ...
https://stackoverflow.com/ques... 

Format timedelta to string

... As you know, you can get the total_seconds from a timedelta object by accessing the .seconds attribute. Python provides the builtin function divmod() which allows for: s = 13420 hours, remainder = divmod(s, 3600) minutes, seconds =...
https://stackoverflow.com/ques... 

How to check if an app is installed from a web-page on an iPhone?

... As far as I know you can not, from a browser, check if an app is installed or not. But you can try redirecting the phone to the app, and if nothing happens redirect the phone to a specified page, like this: setTimeout(function () { wind...
https://stackoverflow.com/ques... 

How accurate is python's time.sleep()?

... also running the code on Mac and Windows, so I probably got confused. I know windows XP at least has a tick rate of about 10ms. – Joseph Lisee Aug 11 '10 at 15:55 ...
https://stackoverflow.com/ques... 

Are memory leaks ever ok? [closed]

... Now consider a few dozen of this allocations. Now consider having to move the "main" body to routine that gets called multiple times. Enjoy. - I agree with the sentiment that it's nto such a big problem in this scenario, but...
https://stackoverflow.com/ques... 

Common elements in two lists

... Use Collection#retainAll(). listA.retainAll(listB); // listA now contains only the elements which are also contained in listB. If you want to avoid that changes are being affected in listA, then you need to create a new one. List<Integer> common = new ArrayList<Integer>(...
https://stackoverflow.com/ques... 

UIButton Long Press Event

...UIGestureRecognizerStateEnded ) { NSLog(@"Long Press"); } } Now this would be the basic approach. You can also set the minimum duration of the press and how much error is tolerable. And also note that the method is called few times if you after recognizing the gesture so if you want t...
https://stackoverflow.com/ques... 

How to dynamically load a Python class

... Thanks I think this is the best way. Now I only need the best way to split the string 'my_pakcage.my_module.my_class' into mod_name, klass_name but I guess I can figure that out :) – pjesi Feb 13 '09 at 22:42 ...
https://stackoverflow.com/ques... 

What does “coalgebra” mean in the context of programming?

...ust the empty tuple (). So we can actually simplify the idea of an algebra now: it's just some type with some number of functions on it. An algebra is just a common pattern in mathematics that's been "factored out", just like we do with code. People noticed that a whole bunch of interesting things...