大约有 47,000 项符合查询结果（耗时：0.0649秒） [XML]
How does a garbage collector avoid an infinite loop here?
...
110
As per Richter in the second edition of CLR via C# (yes I need to update):
Page 478
For (Th...
Looping over a list in Python
...
200
Try this,
x in mylist is better and more readable than x in mylist[:] and your len(x) should b...
Remove grid, background color, and top and right borders from ggplot2
...d panel.background to see the axis lines.
library(ggplot2)
a <- seq(1,20)
b <- a^0.25
df <- as.data.frame(cbind(a,b))
ggplot(df, aes(x = a, y = b)) + geom_point() +
theme_bw() +
theme(axis.line = element_line(colour = "black"),
panel.grid.major = element_blank(),
panel.grid.mi...
What is an intuitive explanation of the Expectation Maximization technique? [closed]
... parameters:
import numpy as np
from scipy import stats
np.random.seed(110) # for reproducible results
# set parameters
red_mean = 3
red_std = 0.8
blue_mean = 7
blue_std = 2
# draw 20 samples from normal distributions with red/blue parameters
red = np.random.normal(red_mean, red_std, size=20)
b...
Targeting position:sticky elements that are currently in a 'stuck' state
...
104
There is currently no selector that is being proposed for elements that are currently 'stuck'. ...
Easy way to list node modules I have npm linked?
...|
edited Jul 24 '14 at 15:06
answered Jul 24 '14 at 14:13
m...
How did Google manage to do this? Slide ActionBar in Android application
...
150
In fact, there's a way to do this. Even without implementing your own ActionBar.
Just have a lo...
How can I use a file in a command and redirect output to the same file without truncating it?
...can use a temporary file though.
#!/bin/sh
tmpfile=$(mktemp)
grep -v 'seg[0-9]\{1,\}\.[0-9]\{1\}' file_name > ${tmpfile}
cat ${tmpfile} > file_name
rm -f ${tmpfile}
like that, consider using mktemp to create the tmpfile but note that it's not POSIX.
...
Why is null an object and what's the difference between null and undefined?
...rs♦
839k212212 gold badges32183218 silver badges28092809 bronze badges
answered Apr 29 '09 at 13:31
RobRob
46.1k44 gold badges69...
How to get the date from jQuery UI datepicker
...
CoolEshCoolEsh
3,02611 gold badge1717 silver badges2424 bronze badges
...