大约有 48,000 项符合查询结果（耗时：0.0597秒） [XML]
Regex group capture in R with multiple capture-groups
...vectors 'x' which are not substituted will be returned unchanged.
So if your text to be selected lies in the middle of some string, adding .* before and after the capture group should allow you to only return it.
gsub(".*\\((.*?) :: (0\\.[0-9]+)\\).*","\\1 \\2", "(sometext :: 0.1231313213)")
...
Prevent row names to be written to file when using write.csv
...ause I did try ?write.csv but... Thx aix!
– watbywbarif
Sep 20 '11 at 11:42
7
Yeah, the trick is ...
How do you determine what technology a website is built on? [closed]
...ation that is exposed the easier it might be for malicious parties to identify security vulnerabilities or denial of service holes.
If I was interested I'd probably look, in no particular order, at:
urls, and file extensions.
HTTP response headers
Source code for comments, or standard JS librarie...
Adding rounded corner and drop shadow to UICollectionViewCell
...ts on adding 2nd view for adding shadow, but I still cannot get it to work if I want to add it in UICollectionViewCell . I subclassed UICollectionViewCell , and here is my code where I add various UI elements to the cell's content view and adding shadow to the layer:
...
How do I repeat an edit on multiple lines in Vim?
...
Thanks. What if i wanted the equivalent of a shift-i? That is, skipping over the initial whitespace?
– saffsd
Dec 10 '08 at 12:49
...
How to debug Angular JavaScript Code
...e all heads in on the next AngularJS 2.0 release. Look into the ng-inspect if Batarang is giving you headaches.
– demisx
Nov 6 '14 at 16:08
...
How to add a TextView to LinearLayout in Android
...
What if I wanted to have the following TextView: <TextView android:id="@+id/tvDInfo3" android:layout_width="0dp" android:layout_height="wrap_content" android:textStyle="bo...
What's the result of += in C and C++?
...
Semantics of the compound assignment operators is different in C and C++:
C99 standard, 6.5.16, part 3:
An assignment operator stores a value in the object designated by the left operand. An
assignment expression has the value of the left operand after the assignment, ...
How to add an extra source directory for maven to compile and include in the build jar?
...t;
<groupId>org.codehaus.mojo</groupId>
<artifactId>build-helper-maven-plugin</artifactId>
<version>1.7</version>
<executions>
<execution>
<id>add-source</id>
<phase>ge...
How to create PDFs in an Android app? [closed]
...
If anyone wants to generate PDFs on Android device, here is how to do it:
http://sourceforge.net/projects/itext/ (library)
http://www.vogella.de/articles/JavaPDF/article.html (tutorial)
http://tutorials.jenkov.com/java-itex...