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What is the best way to initialize a JavaScript Date to midnight?

What is the simplest way to obtain an instance of new Date() but set the time at midnight? 9 Answers ...
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How do I delete all untracked files from my working directory in Mercurial?

Is it possible to delete all untracked files from my working directory? Let's say I added a bunch of files to my working directory, didn't add them via 'hg add' and now want to get rid of those new files entirely? ...
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Define an 's src attribute in CSS [duplicate]

I need to define an 's src attribute in CSS. Is there a way to specify this attribute? 7 Answers ...
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Ruby on Rails: How can I revert a migration with rake db:migrate?

After installing devise MODEL User i got this. 9 Answers 9 ...
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How to check if command line tools is installed

I have a macbook pro with OS X 10.8.2. XCode is installed. I know this as it appears in the Applications directory. There are also the xcodebuild and xcode-select files in /usr/bin I need to know if the command line tools is installed. Is there a command for it? What can I do to see if XCode CLT is ...
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Non-alphanumeric list order from os.listdir()

I often use python to process directories of data. Recently, I have noticed that the default order of the lists has changed to something almost nonsensical. For example, if I am in a current directory containing the following subdirectories: run01, run02, ... run19, run20, and then I generate a list...
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Cleaning `Inf` values from an R dataframe

In R, I have an operation which creates some Inf values when I transform a dataframe. 8 Answers ...
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How to calculate percentage with a SQL statement

I have a SQL Server table that contains users & their grades. For simplicity's sake, lets just say there are 2 columns - name & grade . So a typical row would be Name: "John Doe", Grade:"A". ...
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Passing base64 encoded strings in URL

Is it safe to pass raw base64 encoded strings via GET parameters? 10 Answers 10 ...
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Why does parseInt(1/0, 19) return 18?

I have an annoying problem in JavaScript . 4 Answers 4 ...