[Rd] slightly speeding up readChar()

Michael Lachmann lachmann at eva.mpg.de
Fri Aug 5 15:22:40 CEST 2011

On 5 Aug 2011, at 1:20AM, Dirk Eddelbuettel wrote:

> When you know the (fixed) structure of the data, the CRAN package mmap can be
> a huge winner.

Thanks! I didn't know that.

Is there a package that provides methods for mmap, like sum(x) or maybe even y=x+z
where x, and z are mmaps?

I assume that once you mmap to a huge file, you do operations on it by working on chunks at a time... are there packages for that, or do I have to write my own code?



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