大约有 15,000 项符合查询结果（耗时：0.0229秒） [XML]
C# List of objects, how do I get the sum of a property
... answered Dec 4 '10 at 4:11
Alex LEAlex LE
17.1k44 gold badges2626 silver badges2828 bronze badges
...
Changes in import statement python3
... relative to the current script/package.
Consider the following tree for example:
mypkg
├── base.py
└── derived.py
Now, your derived.py requires something from base.py. In Python 2, you could do it like this (in derived.py):
from base import BaseThing
Python 3 no longer supports t...
Passing arguments forward to another javascript function
...n copy it into an array then manipulate that before passing it along, for example: var copy = [].slice.call(arguments); <remove what you want> myFunc.apply(this, copy);
– Nick Craver♦
Feb 17 '12 at 11:18
...
How is Python's List Implemented?
...
It's a dynamic array. Practical proof: Indexing takes (of course with extremely small differences (0.0013 µsecs!)) the same time regardless of index:
...>python -m timeit --setup="x = [None]*1000" "x[500]"
10000000 loops, best of 3: 0.0579 usec per loop
...>p...
Descending order by date filter in AngularJs
...to documentation you can use the reverse argument.
filter:orderBy(array, expression[, reverse]);
Change your filter to:
orderBy: 'created_at':true
share
|
improve this answer
|
...
python pandas: Remove duplicates by columns A, keeping the row with the highest value in column B
...
This takes the last. Not the maximum though:
In [10]: df.drop_duplicates(subset='A', keep="last")
Out[10]:
A B
1 1 20
3 2 40
4 3 10
You can do also something like:
In [12]: df.groupby('A', group_keys=False).apply(lambda x: x.loc[x.B.idxmax(...
How do I get the height and width of the Android Navigation Bar programmatically?
...
Try below code:
Resources resources = context.getResources();
int resourceId = resources.getIdentifier("navigation_bar_height", "dimen", "android");
if (resourceId > 0) {
return resources.getDimensionPixelSize(resourceId);
}
return 0;
...
Post JSON using Python Requests
... 'User-Agent': 'python-requests/2.4.3 CPython/3.4.0',
'X-Request-Id': 'xx-xx-xx'},
'json': {'key': 'value'},
'origin': 'x.x.x.x',
'url': 'http://httpbin.org/post'}
EDIT: This feature has been added to the official documentation. You can view it here: Requests documentation
...
Python loop counter in a for loop [duplicate]
In my example code below, is the counter = 0 really required, or is there a better, more Python, way to get access to a loop counter? I saw a few PEPs related to loop counters, but they were either deferred or rejected ( PEP 212 and PEP 281 ).
...
How to copy files across computers using SSH and MAC OS X Terminal [closed]
...cp command, which uses the ssh protocol to copy files across machines. It extends the syntax of cp to allow references to other systems:
scp username1@hostname1:/path/to/file username2@hostname2:/path/to/other/file
Copy something from this machine to some other machine:
scp /path/to/local/file u...