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Split a vector into chunks in R
...ails: I think all you need is seq_along(), split() and ceiling():
> d <- rpois(73,5)
> d
[1] 3 1 11 4 1 2 3 2 4 10 10 2 7 4 6 6 2 1 1 2 3 8 3 10 7 4
[27] 3 4 4 1 1 7 2 4 6 0 5 7 4 6 8 4 7 12 4 6 8 4 2 7 6 5
[53] 4 5 4 5 5 8 7 7 7 6 ...
:not(:empty) CSS selector is not working?
...
Being a void element, an <input> element is considered empty by the HTML definition of "empty", since the content model of all void elements is always empty. So they will always match the :empty pseudo-class, whether or not they have a value. Th...
How do I create a WPF Rounded Corner container?
...on't need a custom control, just put your container in a border element:
<Border BorderBrush="#FF000000" BorderThickness="1" CornerRadius="8">
<Grid/>
</Border>
You can replace the <Grid/> with any of the layout containers...
...
How do I change the IntelliJ IDEA default JDK?
...
This setting is changed in the "Default Project Structure..." dialog. Navigate to "File" -> "Other Settings" -> "Default Project Structure...".
Next, modify the "Project language level" setting to your desired language level.
IntelliJ IDEA 12 had ...
Warning - Build path specifies execution environment J2SE-1.4
...RE System Library
Select the new "Execution Environment" or Workspace default JRE
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How to set the context path of a web application in Tomcat 7.0
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What you can do is the following;
Add a file called ROOT.xml in <catalina_home>/conf/Catalina/localhost/
This ROOT.xml will override the default settings for the root context of the tomcat installation for that engine and host (Catalina and localhost).
Enter the following to the RO...
make_unique and perfect forwarding
...rict static type checking (which is the main diff between C++ and C) is built on the idea of enforcing safety, via types. And for that, make_unique can simply be a class instead of function. For example, see my blog article from May 2010. It's also linked to from the discussion on Herb's blog.
...
Inserting HTML elements with JavaScript
...dChild(temp.firstChild);
}
return frag;
}
var fragment = create('<div>Hello!</div><p>...</p>');
// You can use native DOM methods to insert the fragment:
document.body.insertBefore(fragment, document.body.childNodes[0]);
Benefits:
You can use native DOM methods f...
Why can I initialize a List like an array in C#?
...you create as long as:
It implements IEnumerable (preferably IEnumerable<T>)
It has a method named Add(...)
What happens is the default constructor is called, and then Add(...) is called for each member of the initializer.
Thus, these two blocks are roughly identical:
List<int> a =...
Disable Maven warning message - “Selected war files include a WEB-INF/web.xml which will be ignored”
...l is added to the project by other means, and should't be packaged by default):
<project>
...
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-war-plugin<...