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Check if class already assigned before adding
In jQuery, is it recommended to check if a class is already assigned to an element before adding that class? Will it even have any effect at all?
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Persistent invalid graphics state error when using ggplot2
I believe my dataframe is okay and my code is okay. In fact, I have eliminated parts of the dataframe and most of the graphing code to make things as basic as possible. But still, I get:
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Is onload equal to readyState==4 in XMLHttpRequest?
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It should be the same thing. onload was added in XMLHttpRequest 2 whereas onreadystatechange has been around since the original spec.
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Sharing src/test classes between modules in a multi-module maven project
...ore we are happy that Data must be built prior to Consumer. As a result, using the techniques suggested in the comments, I would ensure your Data project contains all the test code that you wish to share and configure the POM to produce a test JAR:
<plugin>
<groupId>org.apache.maven.p...
What is the ellipsis (…) for in this method signature?
In the App Engine docs , what is the ellipsis ( JID... ) for in this method signature?
5 Answers
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When do you need to explicitly call a superclass constructor?
So say I have a subclass that extends a superclass. In what scenarios do I need to explicitly type super() to get the superclass constructor to run?
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How to include a child object's child object in Entity Framework 5
I am using Entity Framework 5 code first and ASP.NET MVC 3 .
4 Answers
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“An exception occurred while processing your request. Additionally, another exception occurred while
I'm trying to publish an MVC website as an Azure webrole.
6 Answers
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Turning live() into on() in jQuery
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The on documentation states (in bold ;)):
Event handlers are bound only to the currently selected elements; they must exist on the page at the time your code makes the call to .on().
Equivalent to .live() would be something like
$(document.body)....
How to find a min/max with Ruby
I want to use min(5,10) , or Math.max(4,7) . Are there functions to this effect in Ruby?
6 Answers
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