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Can I set the height of a div based on a percentage-based width? [duplicate]

Let's say I've got a div that has a width of 50% of the body. How do I make its height equal to that value? So that when the browser window is 1000px wide, the div's height and width are both 500px. ...
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Get the index of the object inside an array, matching a condition

I have an array like this: 13 Answers 13 ...
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C++ include and import difference

What is the difference between #include and #import in C++? 5 Answers 5 ...
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What is the maximum possible length of a query string?

Is it browser dependent? Also, do different web stacks have different limits on how much data they can get from the request? ...
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How to suppress warnings globally in an R Script

I have a long R script that throws some warnings, which I can ignore. I could use 4 Answers ...
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Setting JDK in Eclipse

I have two JDKs, for Java 6 and 7. 6 Answers 6 ...
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MySQL Fire Trigger for both Insert and Update

Is it possible to fire a mysql trigger for both the insert and update events of a table? 3 Answers ...
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Warning as error - How to rid these

I cannot figure out how to get rid of errors that basically should not be halting my compile in Visual Studio 2010 and should not be show stoppers, or at least I will fix them later, but I don't want the compile to just error and halt on these kinds of problems. ...
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looping through an NSMutableDictionary

How do I loop through all objects in a NSMutableDictionary regardless of the keys? 6 Answers ...
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git-svn: how do I create a new svn branch via git?

I have a git repository which tracks an svn repository. I cloned it using --stdlayout . 3 Answers ...