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knitr Markdown highlighting in Emacs?

Is there any modification of an existing tool or new tool that will syntax-highlight (colour) blocks of R code in a knitr markdown document when opened in Emacs? ...
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What is the purpose of the single underscore “_” variable in Python?

What is the meaning of _ after for in this code? 5 Answers 5 ...
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Exception thrown in catch and finally clause

... Based on reading your answer and seeing how you likely came up with it, I believe you think an "exception-in-progress" has "precedence". Keep in mind: When an new exception is thrown in a catch block or finally block that will propagate...
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How to avoid circular imports in Python? [duplicate]

I know the issue of circular imports in python has come up many times before and I have read these discussions. The comment that is made repeatedly in these discussions is that a circular import is a sign of a bad design and the code should be reorganised to avoid the circular import. ...
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What are allowed characters in cookies?

What are the allowed characters in both cookie name and value? Are they same as URL or some common subset? 13 Answers ...
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Does the default constructor initialize built-in types?

Does the default constructor (created by the compiler) initialize built-in-types? 7 Answers ...
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Error to use a section registered as allowDefinition='MachineToApplication' beyond application level

The top line in all of my aspx pages in my /portal/ directory has this error message, and I know it's a common one. I have googled this error message to no end, and I see a lot of posts telling me to configure the /portal/ folder as an application in IIS (which I have), and more posts telling me I ...
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What is a 'Closure'?

I asked a question about Currying and closures were mentioned. What is a closure? How does it relate to currying? 23 Answer...
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“Content is not allowed in prolog” when parsing perfectly valid XML on GAE

I've been beating my head against this absolutely infuriating bug for the last 48 hours, so I thought I'd finally throw in the towel and try asking here before I throw my laptop out the window. ...
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Chrome, Javascript, window.open in new tab

In chrome this opens in a new tab: 8 Answers 8 ...