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Rails: how do I validate that something is a boolean?

... Luca Spiller 2,01833 gold badges2222 silver badges2828 bronze badges answered Jan 18 '11 at 7:38 Drew Dara-AbramsDre...
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CORS - How do 'preflight' an httprequest?

... monsurmonsur 37.3k1515 gold badges9090 silver badges9191 bronze badges ...
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Why do you need to create a cursor when querying a sqlite database?

...but also to identify a row in a table to be updated or deleted. The SQL:2003 standard defines positioned update and positioned delete SQL statements for that purpose. Such statements do not use a regular WHERE clause with predicates. Instead, a cursor identifies the row. The cursor must be o...
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what is the most efficient way of counting occurrences in pandas?

... Dan AllanDan Allan 27.4k66 gold badges6060 silver badges6060 bronze badges 26 ...
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Write to UTF-8 file in Python

...4 Zanon 20.3k1414 gold badges9595 silver badges106106 bronze badges answered Jun 1 '09 at 9:46 Jon SkeetJon Sk...
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Create a menu Bar in WPF?

... 230 <DockPanel> <Menu DockPanel.Dock="Top"> <MenuItem Header="_File"> ...
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Npm install failed with “cannot run in wd”

I am trying to get my node environment set up on a new Ubuntu 12.04 instance, with Node 0.8.14 already installed, but I ran into problems when I try to run npm install . So when I try npm install , it says that I need to run it as root or adminisrator: ...
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Passing command line arguments from Maven as properties in pom.xml

...ridable defaults. – dan carter Jun 30 '15 at 1:53 2 We can also pass multiple arguments like this...
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IE9 border-radius and background gradient bleeding

...d does not require wrapping with additional elements. I grabbed a random 20x20 gradient PNG via a web search, and converted it into a data URI using an online tool. The resulting data URI is smaller than the CSS code for all that SVG mess, much less the SVG itself! (You could apply this condition...
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Django: How to completely uninstall a Django app?

... answered Jul 25 '10 at 21:42 Gabriel HurleyGabriel Hurley 36.9k1111 gold badges5656 silver badges8383 bronze badges ...