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Eclipse doesn't highlight references anymore

I have an odd problem. In Eclipse Ganymede, I used to be able to highlight a variable, and it would highlight the use of that variables in that method. However through some action I have now disabled it. Is there a way I can enable it? ...
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What is the most efficient way to store a list in the Django models?

Currently I have a lot of python objects in my code similar to the following: 12 Answers ...
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Ruby's ||= (or equals) in JavaScript?

I love Ruby's ||= mechanism. If a variable doesn't exist or is nil , then create it and set it equal to something: 6 Ans...
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C# switch statement limitations - why?

When writing a switch statement, there appears to be two limitations on what you can switch on in case statements. 17 Answe...
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How to remove the first character of string in PHP?

How to use PHP , Remove the first character : 13 Answers 13 ...
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Make an HTTP request with android

I have searched everywhere but I couldn't find my answer, is there a way to make an simple HTTP request? I want to request an PHP page / script on one of my website but I don't want to show the webpage. ...
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PreparedStatement IN clause alternatives?

... are the best workarounds for using a SQL IN clause with instances of java.sql.PreparedStatement , which is not supported for multiple values due to SQL injection attack security issues: One ? placeholder represents one value, rather than a list of values. ...
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Default implementation for Object.GetHashCode()

How does the default implementation for GetHashCode() work? And does it handle structures, classes, arrays, etc. efficiently and well enough? ...
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DateTime.ToString() format that can be used in a filename or extension?

I want to add a timestamp to filenames as files are created but most of the DateTime methods I've tried output something with spaces and slashes. For instance: ...
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Duplicate keys in .NET dictionaries?

Are there any dictionary classes in the .NET base class library which allow duplicate keys to be used? The only solution I've found is to create, for example, a class like: ...