Re: [Rd] data frame subset patch, take 2

From: Marcus G. Daniels <mgd_at_santafe.edu>
Date: Wed 13 Dec 2006 - 18:23:21 GMT

Vladimir Dergachev wrote:

> 2. It would be nice to have true hashed arrays in R (i.e. O(1) access
> times). So far I have used named lists for this, but they are O(n):
>
new.env(hash=TRUE) with get/assign/exists works ok. But I suspect its just too easy to use named lists because it is easy, and that has bad performance ramifications for user code (perhaps the R developers are more vigilant about this for the R code itself).



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