大约有 48,000 项符合查询结果（耗时：0.0266秒） [XML]
AWK: Access captured group from line pattern
...me ago.
Apparently the AWK regular expression engine does not capture its groups.
you might consider using something like :
perl -n -e'/test(\d+)/ && print $1'
the -n flag causes perl to loop over every line like awk does.
...
Python group by
...13331', '9843236'], 'type': 'KAT'}]
It is also possible with itertools.groupby but it requires the input to be sorted first.
>>> sorted_input = sorted(input, key=itemgetter(1))
>>> groups = groupby(sorted_input, key=itemgetter(1))
>>> [{'type':k, 'items':[x[0] for x i...
Linear Regression and group by in R
...like, however. In SAS I would do a 'by' statement and in SQL I would do a 'group by'. What's the R way of doing this?
10 An...
Add Bootstrap Glyphicon to Input Box
...g Validation States with Optional Icons. This is done by giving the .form-group element the class of .has-feedback and the icon the class of .form-control-feedback.
The simplest example would be something like this:
<div class="form-group has-feedback">
<label class="control-label"&g...
Plot a legend outside of the plotting area in base graphics?
... "o", ylim=c(-2,2), bty='L')
# this legend gets clipped:
legend(2.8,0,c("group A", "group B"), pch = c(1,2), lty = c(1,2))
# so turn off clipping:
par(xpd=TRUE)
legend(2.8,-1,c("group A", "group B"), pch = c(1,2), lty = c(1,2))
...
Regex for splitting a string using space when not surrounded by single or double quotes
... regular expression:
[^\s"']+|"([^"]*)"|'([^']*)'
I added the capturing groups because you don't want the quotes in the list.
This Java code builds the list, adding the capturing group if it matched to exclude the quotes, and adding the overall regex match if the capturing group didn't match (an...
How to extract a substring using regex
...tern.matcher(mydata);
if (matcher.find())
{
System.out.println(matcher.group(1));
}
Result:
the data i want
share
|
improve this answer
|
follow
|
...
What is the (best) way to manage permissions for Docker shared volumes?
...ome/graphitedata is something like:
FROM debian:jessie
# add our user and group first to make sure their IDs get assigned consistently, regardless of other deps added later
RUN groupadd -r graphite \
&& useradd -r -g graphite graphite
RUN mkdir -p /data/graphite \
&& chown -R gr...
Compiler Ambiguous invocation error - anonymous method and method group with Func or Action
I have a scenario where I want to use method group syntax rather than anonymous methods (or lambda syntax) for calling a function.
...
Why did Rails4 drop support for “assets” group in the Gemfile
...generate assets in the asset pipeline were properly placed in the assets group of the Gemfile:
3 Answers
...