I had two versions of Python installed on my machine (versions 2.6 and 2.5). I want to run 2.6 for one project and 2.5 for another. ...

In RStudio, you can run parts of code in the code editing window, and the results appear in the console. 10 Answers ...

In straight up javascript (i.e., no extensions such as jQuery, etc.), is there a way to determine a child node's index inside of its parent node without iterating over and comparing all children nodes? ...

I was looking for a CONCAT function in SQL Server 2008 R2. I found the link for this function . But when I use this function, it gives the following error: ...

I'm building a HTML5 game and I am trying to put the mouse cursor over a certain control on a specific event so that moving in a specific direction always has the same result. Is this possible? ...

How do I detect from within a shell script if its standard output is being sent to a terminal or if it's piped to another process? ...

I have created a custom widget, and I'm declaring it in layout.xml. I have also added some custom attributes in attr.xml. However, when trying to declare these attributes in a style in styles.xml, it's giving me No resource found that matches the given name: attr 'custom:attribute'. ...

I am using mysql and need to update a column with a null value. I have tried this many different ways and the best I have gotten is an empty string. ...

I have a series of text files for which I'd like to know the lines in common rather than the lines which are different between them. Command line unix or windows is fine. ...

Is it possible to have a normal link pointing to the current location? 21 Answers 21 ...