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Where can I learn how to write C code to speed up slow R functions? [closed]

...at's the best resource for learning how to write C code for use with R? I know about the system and foreign language interfaces section of R extensions, but I find it pretty hard going. What are good resources (both online and offline) for writing C code for use with R? ...
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How to apply a CSS filter to a background image

I have a JPEG file that I'm using as a background image for a search page, and I'm using CSS to set it because I'm working within Backbone.js contexts: ...
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How do I get the last four characters from a string in C#?

... Armen TsirunyanArmen Tsirunyan 116k4949 gold badges295295 silver badges407407 bronze badges ...
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How to drop a table if it exists?

... Martin SmithMartin Smith 389k7575 gold badges657657 silver badges761761 bronze badges ...
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What happens if i return before the end of using statement? Will the dispose be called?

...ed. It's called as soon as the execution leaves the scope of the using block, regardless of what means it took to leave the block, be it the end of execution of the block, a return statement, or an exception. As @Noldorin correctly points out, using a using block in code gets compiled into try/fi...
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How to capitalize the first letter of word in a string using Java?

...pperCase() + input.substring(1); Now output will have what you want. Check that your input is at least one character long before using this, otherwise you'll get an exception. share | improve this...
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Add space between HTML elements only using CSS

...ailed answer to a similar question: Separators between elements without hacks share | improve this answer | follow | ...
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Remove xticks in a matplotlib plot?

I have a semilogx plot and I would like to remove the xticks. I tried: 9 Answers 9 ...
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Eclipse reports rendering library more recent than ADT plug-in

On a new Android SDK installation, the Eclipse Graphical Layout is blank, rather than showing the rendering of the layout. Eclipse displays this message: ...
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How to make type=“number” to positive numbers only

... Álvaro González 124k3434 gold badges222222 silver badges314314 bronze badges answered Oct 7 '13 at 19:52 QuentinQuentin ...