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How to determine the first and last iteration in a foreach loop?

The question is simple. I have a foreach loop in my code: 20 Answers 20 ...
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How can you find the height of text on an HTML canvas?

The spec has a context.measureText(text) function that will tell you how much width it would require to print that text, but I can't find a way to find out how tall it is. I know it's based on the font, but I don't know to convert a font string to a text height. ...
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How to install mongoDB on windows?

I am trying to test out mongoDB and see if it is anything for me. I downloaded the 32bit windows version, but have no idea on how to continue from now on. ...
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Re-open *scratch* buffer in Emacs?

If I accidentally closed the scratch buffer in Emacs, how do I create a new scratch buffer? 16 Answers ...
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How do I analyze a .hprof file?

I have a production server running with the following flag: - XX:+HeapDumpOnOutOfMemoryError 7 Answers ...
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What's a good hex editor/viewer for the Mac? [closed]

What's a good hex editor/viewer for the Mac? I've used xxd for viewing hexdumps, and I think it can be used in reverse to make edits. But what I really want is a real hex editor. ...
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Combined area of overlapping circles

I recently came across a problem where I had four circles (midpoints and radius) and had to calculate the area of the union of these circles. ...
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Can Selenium interact with an existing browser session?

Does anybody know if Selenium (WebDriver preferably) is able to communicate with and act through a browser that is already running before launching a Selenium Client? ...
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“please check gdb is codesigned - see taskgated(8)” - How to get gdb installed with homebrew code si

I'm under osx 10.8.4 and have installed gdb 7.5.1 with homebrew (motivation get a new gdb with new features such as --with-python etc... ) ...
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What HTTP status response code should I use if the request is missing a required parameter?

I am thinking 412 (Precondition Failed) but there may be a better standard? 12 Answers ...