大约有 40,100 项符合查询结果（耗时：0.0435秒） [XML]
How to split a string in shell and get the last field
Suppose I have the string 1:2:3:4:5 and I want to get its last field ( 5 in this case). How do I do that using Bash? I tried cut , but I don't know how to specify the last field with -f .
...
How to change tab size on GitHub?
...
Original answer
Is that possible to change this configuration to 2 or 4 spaces?
No. It's only available as part of the editing feature through the Ace editor and the change is not persisted.
This blog post gives some more information about the embedded IDE.
However, provided you know the ur...
C# Regex for Guid
...
184
This one is quite simple and does not require a delegate as you say.
resultString = Regex.Repla...
How to squash commits in git after they have been pushed?
...
Squash commits locally with
git rebase -i origin/master~4 master
and then force push with
git push origin +master
Difference between --force and +
From the documentation of git push:
Note that --force applies to all the refs that are pushed, hence using
it with pus...
LISTAGG in Oracle to return distinct values
...
24 Answers
24
Active
...
Bootstrap right Column on top on mobile view
...|
edited Mar 20 '19 at 17:43
answered Jan 7 '14 at 18:35
Sc...
How to succinctly write a formula with many variables from a data frame?
... a formula to mean all the variables, it is the . identifier.
y <- c(1,4,6)
d <- data.frame(y = y, x1 = c(4,-1,3), x2 = c(3,9,8), x3 = c(4,-4,-2))
mod <- lm(y ~ ., data = d)
You can also do things like this, to use all variables but one (in this case x3 is excluded):
mod <- lm(y ~ . ...
How to format a floating number to fixed width in Python
...
for x in numbers:
print "{:10.4f}".format(x)
prints
23.2300
0.1233
1.0000
4.2230
9887.2000
The format specifier inside the curly braces follows the Python format string syntax. Specifically, in this case, it consists of the following ...
Pretty-Print JSON Data to a File using Python
...ed
twitterDataFile.write(simplejson.dumps(simplejson.loads(output), indent=4, sort_keys=True))
twitterDataFile.close()
share
|
improve this answer
|
follow
|
...
Replacement for “rename” in dplyr
...
148
dplyr version 0.3 added a new rename() function that works just like plyr::rename().
df <- ...