大约有 40,000 项符合查询结果（耗时：0.0461秒） [XML]
CSS3 gradient background set on body doesn't stretch but instead repeats?
...e bottom gap (Webkit).
– j7nn7k
Sep 20 '11 at 11:19
4
Setting a background to the body and then t...
How to calculate moving average using NumPy?
... ret[n:] - ret[:-n]
return ret[n - 1:] / n
>>> a = np.arange(20)
>>> moving_average(a)
array([ 1., 2., 3., 4., 5., 6., 7., 8., 9., 10., 11.,
12., 13., 14., 15., 16., 17., 18.])
>>> moving_average(a, n=4)
array([ 1.5, 2.5, 3.5, 4...
?: operator (the 'Elvis operator') in PHP
...
20
What's funny is that this answer forms a recursive loop with the Wiki article, which didn't fully explain why it's called the "Elvis operat...
Unique combination of all elements from two (or more) vectors
...maybe what you are after
> expand.grid(a,b)
Var1 Var2
1 ABC 2012-05-01
2 DEF 2012-05-01
3 GHI 2012-05-01
4 ABC 2012-05-02
5 DEF 2012-05-02
6 GHI 2012-05-02
7 ABC 2012-05-03
8 DEF 2012-05-03
9 GHI 2012-05-03
10 ABC 2012-05-04
11 DEF 2012-05-04
12 GHI 2012-05-04
13 A...
R command for setting working directory to source file location in Rstudio
...e:rstudioapi'
– Andru
Nov 22 '16 at 20:32
2
Note that when you run getActiveDocumentContext() in ...
What does the exclamation mark mean in a Haskell declaration?
...2
cjscjs
20.4k66 gold badges7373 silver badges9090 bronze badges
...
Multiple commands in gdb separated by some sort of delimiter ';'?
...
answered Aug 11 '09 at 20:40
Sean BrightSean Bright
106k1717 gold badges128128 silver badges138138 bronze badges
...
How can I see the raw SQL queries Django is running?
...ebug.
– scoopseven
Aug 16 '12 at 17:20
The only thing is you see SQL queries on browser. If you run tests from termina...
Random number generator only generating one random number
... |
edited Apr 24 at 1:20
Mehmet Karadeniz
12577 bronze badges
answered Apr 20 '09 at 12:12
...
How does Duff's device work?
...ere's the Wikipedia example with some notations.
Let's say you're copying 20 bytes. The flow control of the program for the first pass is:
int count; // Set to 20
{
int n = (count + 7) / 8; // n is now 3. (The "while" is going
// ...