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Internal implementation of select #172

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hadley opened this issue Jan 2, 2014 · 2 comments
Closed

Internal implementation of select #172

hadley opened this issue Jan 2, 2014 · 2 comments
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@hadley
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hadley commented Jan 2, 2014

To avoid making any copies of the columns (a la http://stackoverflow.com/questions/20886748)

@ghost ghost assigned romainfrancois Jan 2, 2014
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hadley commented Jan 20, 2014

Before implementing this, need to implement #158 and #192

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An easy enough way to handle this is to compute the names of the variables we want to keep on the R side and then pass the original data frame and these names down to some C++ function that will use shallow copying of the columns.

But we should I think keep the logic in R. I mean we could do #158 internally if we want, but that's not going to be very worth it.

hadley added a commit that referenced this issue Feb 4, 2014
@hadley hadley closed this as completed in d948c6e Feb 4, 2014
@hadley hadley modified the milestones: v0.1.2, v0.2 Feb 17, 2014
krlmlr pushed a commit to krlmlr/dplyr that referenced this issue Mar 2, 2016
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