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Installing older version of R package

I am trying to use Rpy2 and ggplot2 but I get an error. After some searching for the error online, I found that the error occurs because there are changes in the ggplot2 package that are not yet reflected in Rpy2 (for example, see this post (Edit: Link is now dead)). ...
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How to specialize std::hash::operator() for user-defined type in unordered containers?

... 128 You are expressly allowed and encouraged to add specializations to namespace std*. The correct ...
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Logging request/response messages when using HttpClient

...: application/json; charset=utf-8 } "Hello, World!" Response: StatusCode: 200, ReasonPhrase: 'OK', Version: 1.1, Content: System.Net.Http.StreamContent, Headers: { Date: Fri, 20 Sep 2013 20:21:26 GMT Server: Microsoft-HTTPAPI/2.0 Content-Length: 15 Content-Type: application/json; charset=ut...
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How to convert a string into double and vice versa?

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getting the last item in a javascript object

... 2 @sprugman: Not in Chrome. A long a heated debate has been raging about this subject: code.google.com/p/v8/issues/detail?id=164 ...
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Creating C macro with ## and __LINE__ (token concatenation with positioning macro)

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Spring Expression Language (SpEL) with @Value: dollar vs. hash ($ vs. #)

... skaffmanskaffman 374k9292 gold badges779779 silver badges744744 bronze badges ...
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Best practice for instantiating a new Android Fragment

... Vasily Kabunov 4,8391212 gold badges3939 silver badges4646 bronze badges answered Feb 12 '12 at 0:57 yydlyydl ...
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Can I incorporate both SignalR and a RESTful API?

... | edited Aug 21 '15 at 7:15 Dennis 33.6k99 gold badges6666 silver badges127127 bronze badges ...
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How to configure MongoDB Java driver MongoOptions for production use?

... Updated to 2.9 : autoConnectRetry simply means the driver will automatically attempt to reconnect to the server(s) after unexpected disconnects. In production environments you usually want this set to true. connectionsPerHost are the ...