大约有 40,000 项符合查询结果（耗时：0.1012秒） [XML]
How to increase timeout for a single test case in mocha
...(done){
this.timeout(500);
[Put network code here, with done() in the callback]
})
For arrow function use as follows:
it('accesses the network', (done) => {
[Put network code here, with done() in the callback]
}).timeout(500);
...
How do you use String.substringWithRange? (or, how do Ranges work in Swift?)
...
So what's the right answer here? Calling advance means we have to iterate the whole way through a possibly long string. But forming an NSRange and using NSString explicitly is dangerous? What's left?
– matt
Nov 18 '14 at...
Convert unix time to readable date in pandas dataframe
...000/svg\"\u003e\u003cpath d=\"M46.1709 9.17788C46.1709 8.26454 46.2665 7.94324 47.1084 7.58816C47.4091 7.46349 47.7169 7.36433 48.0099 7.26993C48.9099 6.97997 49.672 6.73443 49.672 5.93063C49.672 5.22043 48.9832 4.61182 48.1414 4.61182C47.4335 4.61182 46.7256 4.91628 46.0943 5.50789C45.7307 4.9328 4...
Django migration strategy for renaming a model and relationship fields
...n files (!).
Update: As ceasaro mentions, newer versions of Django are usually able to detect and ask if a model is renamed. So try manage.py makemigrations first and then check the migration file.
share
|
...
Entity Framework: table without primary key
... Changing the code to satisfy EF is a workaround in itself. Not all tables need a primary key nor they should be forced to. E.g. you've a Topic and it has 0 or many keywords. The keywords table can have a parent topic id and a corresponding keyword. TO say that I need to remodel my DB bec...
JavaScript function similar to Python range()
...uple of additional defensive checks - ensure that the arguments passed are all coercible to numbers and ensure that stop is greater than start (and swap them if not).
– Russ Cam
Nov 25 '11 at 18:46
...
How to convert a data frame column to numeric type?
... and this is not the most confounding thing, but it can confuse you, especially if you read this before rolling into bed.
Here goes: first two columns are character. I've deliberately called 2nd one fake_char. Spot the similarity of this character variable with one that Dirk created in his reply. I...
How to download/checkout a project from Google Code in Windows?
...l 'Subversion for Windows' from here:
http://sourceforge.net/projects/win32svn/
After installing, just open up a command prompt, go the folder you want to download into, then past in the checkout command as indicated on the project's 'source' page. E.g.
svn checkout http://projectname.googlecod...
Python Pandas: Get index of rows which column matches certain value
... frame (whose data may be gibabytes). What about dftest? Doesn't this also allocate a very large intermediate object where the returned index may be very small, or even empty. Are these magically optimized away using lazy views. If not then surely there must be an efficient way.
...
Multiple aggregations of the same column using pandas GroupBy.agg()
... functions f1, f2 to the same column df["returns"] , without having to call agg() multiple times?
3 Answers
...