Re: [Rd] Possible changes to connections

From: Seth Falcon <>
Date: Thu, 31 May 2007 14:12:26 -0700


One more comment on this thread...

Jeffrey Horner <> writes:

> Prof Brian Ripley wrote:
>> When I originally implemented connections in R 1.2.0, I followed the model
>> in the 'Green Book' closely. There were a number of features that forced
>> a particular implementation, and one was getConnection() that allows one
>> to recreate a connection object from a number.
> [...]
>> Another issue is that the current connection objects can be saved and
>> restored but refer to a global table that is session-specific so they lose
>> their meaning (and perhaps gain an unintended one).
>> What I suspect is that very few users are aware of the Green Book
>> description and so we have freedom to make some substantial changes
>> to the implementation. Both issues suggest that connection objects should
>> be based on external pointers (which did not exist way back in 1.2.0).
> Sounds great! I would also like to see the following interface (all or
> in parts) added for working with connections from C. This is an update
> to the patch I created here:

I wanted to voice a "me too" for wanting to see an interface added for working with connections from C in package code. There are a number of places where this would be useful and provide cleaner solution than what is possible today.

The proposed interface looks useful.

+ seth

Seth Falcon | Computational Biology | Fred Hutchinson Cancer Research Center

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