R help - May 2008 - hashmap in R

Hi friends on R list,

Have people tried to implement a hashmap in R? What is the generic way to
implement a lookup table in R?

Best,
Jonathan

 
==============Jonathan Qiang Li

==============

     
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Qiang Li (Jonathan <jonathanli_1999 <at> yahoo.com> writes:
> Have people tried to implement a hashmap in R? What is the generic way to
implement a lookup table in R?

By default, this is implicit, for example, when using named vectors.

http://finzi.psych.upenn.edu/R/Rhelp02a/archive/51507.html

and ?environment

Dieter

"Qiang Li (Jonathan)" <jonathanli_1999 at yahoo.com> wrote in
message
news:<328180.44275.qm at
web50805.mail.re2.yahoo.com>...
> Hi friends on R list,
>
> Have people tried to implement a hashmap in R? What is the generic way to 
> implement a lookup table in R?
Does this help?
> x <- rnorm(4)
> names(x) <- c("a", "b", "c",
"d")
> x
         a          b          c          d
-1.4122868  1.3588267 -0.5499391 -0.3581889
> x["d"]
         d
-0.3581889


efg
Earl F Glynn
Bioinformatics
Stowers Institute for Medical Research