大约有 31,500 项符合查询结果（耗时：0.0390秒） [XML]
join list of lists in python [duplicate]
...
@ZachEstela, I'm happy to see someone call this unpythonic. It seems like many techniques others like to call pythonic are not easily understood at first glance. Readability is one of the things that makes Python attractive to me. This solution is cool, and pro...
How to find the duration of difference between two dates in java?
...
Hi first of all thank you so much for your short and nice answer, I am facing one problem on your solution like I have two date 06_12_2017_07_18_02_PM and another one is 06_12_2017_07_13_16_PM, I am getting 286 seconds instead I should g...
How to remove trailing whitespaces with sed?
...
hm. its also buggy in the sense that it will remove all trailing "t"s :)
– Good Person
Aug 1 '14 at 2:30
2
...
Append integer to beginning of list in Python [duplicate]
...original list? It could be an argument to a function for instance and the caller doesn't expect the list to be modified and it would introduce an error into the program to do so.
– BlackJack
Oct 19 '16 at 12:50
...
Graphviz: How to go from .dot to a graph?
...neato and twopi. If graphiz isn't in your path, figure out where it is installed and run it from there.
You can change the output format by varying the value after -T and choosing an appropriate filename extension after -o.
If you're using windows, check out the installed tool called GVEdit, it ma...
Is there a reason that we cannot iterate on “reverse Range” in ruby?
...its start and end, not by its contents. "Iterating" over a range doesn't really make sense in a general case. Consider, for example, how you would "iterate" over the range produced by two dates. Would you iterate by day? by month? by year? by week? It's not well-defined. IMO, the fact that it's allo...
How to change plot background color?
...he stateful API (if you're doing anything more than a few lines, and especially if you have multiple plots, the object-oriented methods above make life easier because you can refer to specific figures, plot on certain axes, and customize either)
plt.plot(...)
ax = plt.gca()
Then you can use set_...
What is the best way to implement “remember me” for a website? [closed]
...match, a theft is assumed. The user receives a strongly worded warning and all of the user's remembered sessions are deleted.
If the username and series are not present, the login cookie is ignored.
This approach provides defense-in-depth. If someone manages to leak the database table, it does no...
Batch: Remove file extension
...
In case the file your variable holds doesn't actually exist the FOR approach won't work. One trick you could use, if you know the length of the extension, is taking a substring:
%var:~0,-4%
the -4 means that the last 4 digits (presumably .ext) will be truncated.
...
Android: Clear the back stack
... to the
foreground, and then clear it to its
root state. This is especially useful,
for example, when launching an
activity from the notification
manager.
So your code to launch A would be:
Intent intent = new Intent(this, A.class);
intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP | Inten...