大约有 40,974 项符合查询结果（耗时：0.0479秒） [XML]
How to query SOLR for empty fields?
...
answered Nov 21 '10 at 17:49
netcodernetcoder
60k1616 gold badges116116 silver badges139139 bronze badges
...
Differences between numpy.random and random.random in Python
...ule performs faster:
In [1]: from random import normalvariate
In [2]: N = 1000000
In [3]: %timeit samples = [normalvariate(0, 1) for _ in xrange(N)]
1 loop, best of 3: 963 ms per loop
In [4]: %timeit np.random.normal(size=N)
10 loops, best of 3: 38.5 ms per loop
...
In C++, what is a “namespace alias”?
...
answered May 2 '14 at 10:26
kiriloffkiriloff
21.4k3232 gold badges122122 silver badges201201 bronze badges
...
Gray out image with CSS?
...
Use the CSS3 filter property:
img {
-webkit-filter: grayscale(100%);
-moz-filter: grayscale(100%);
-o-filter: grayscale(100%);
-ms-filter: grayscale(100%);
filter: grayscale(100%);
}
The browser support is a little bad but it's 100% CSS. A nice art...
What is a callback?
...
answered Jan 26 '10 at 14:04
JoeyJoey
304k7575 gold badges627627 silver badges640640 bronze badges
...
How to implement if-else statement in XSLT?
...
c32hedge
6941010 silver badges1717 bronze badges
answered Nov 29 '12 at 9:23
InfantPro'Aravind'InfantPro'Aravind'...
What is sandboxing?
...
answered Jan 24 '10 at 6:51
clawsclaws
44.6k5454 gold badges138138 silver badges184184 bronze badges
...
SQL Server Configuration Manager not found
...
10 Answers
10
Active
...
Java - No enclosing instance of type Foo is accessible
...
helloworld922helloworld922
10k33 gold badges4242 silver badges7777 bronze badges
...
ASP.NET Identity DbContext confusion
...
answered Nov 11 '13 at 10:30
Olav NybøOlav Nybø
10.8k66 gold badges3939 silver badges3333 bronze badges
...