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Prepend a level to a pandas MultiIndex
I have a DataFrame with a MultiIndex created after some grouping:
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How to find a parent with a known class in jQuery?
I have a <div> that has many other <div> s within it, each at a different nesting level. Rather than give every child <div> an identifier, I rather just give the root <div> the identifier. Here’s an example:
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How to open, read, and write from serial port in C?
I am a little bit confused about reading and writing to a serial port. I have a USB device in Linux that uses the FTDI USB serial device converter driver. When I plug it in, it creates: /dev/ttyUSB1.
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Border around tr element doesn't show?
It seems like Chrome/Firefox do not render borders on tr , but it renders the border if the selector is table tr td .
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How can I see the specific value of the sql_mode?
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Visual Studio or Resharper functionality for placement of using directives
I like to put my using directives inside the current namespace, and not outside as VS and Resharper per default puts them.
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How to manually install an artifact in Maven 2?
I've encountered some errors when I tried to install an artifact manually with Maven 2. I wanted to install a jar from a local directory with the command
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Analyze audio using Fast Fourier Transform
I am trying to create a graphical spectrum analyzer in python.
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How to overcome TypeError: unhashable type: 'list'
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Compare integer in bash, unary operator expected
The following code gives
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