[R] Is there a hash data structure for R

[Yonghua Peng]

But for data.frame the colnames can be duplicated. Am I right?

Regards.

On Tue, Nov 2, 2021 at 6:29 PM Jan van der Laan <rhelp using eoos.dds.nl> wrote:

>
> True, but in a lot of cases where a python user might use a dict an R
> user will probably use a list; or when we are talking about arrays of
> dicts in python, the R solution will probably be a data.frame (with each
> dict field in a separate column).
>
> Jan
>
>
>
>
> On 02-11-2021 11:18, Eric Berger wrote:
> > One choice is
> > new.env(hash=TRUE)
> > in the base package
> >
> >
> >
> > On Tue, Nov 2, 2021 at 11:48 AM Yonghua Peng <yong using pobox.com> wrote:
> >
> >> I know this is a newbie question. But how do I implement the hash
> structure
> >> which is available in other languages (in python it's dict)?
> >>
> >> I know there is the list, but list's names can be duplicated here.
> >>
> >>> x <- list(x=1:5,y=month.name,x=3:7)
> >>
> >>> x
> >>
> >> $x
> >>
> >> [1] 1 2 3 4 5
> >>
> >>
> >> $y
> >>
> >>   [1] "January"   "February"  "March"     "April"     "May"       "June"
> >>
> >>   [7] "July"      "August"    "September" "October"   "November"
> "December"
> >>
> >>
> >> $x
> >>
> >> [1] 3 4 5 6 7
> >>
> >>
> >>
> >> Thanks a lot.
> >>
> >>          [[alternative HTML version deleted]]
> >>
> >> ______________________________________________
> >> R-help using r-project.org mailing list -- To UNSUBSCRIBE and more, see
> >> https://stat.ethz.ch/mailman/listinfo/r-help
> >> PLEASE do read the posting guide
> >> http://www.R-project.org/posting-guide.html
> >> and provide commented, minimal, self-contained, reproducible code.
> >>
> >
> >       [[alternative HTML version deleted]]
> >
> > ______________________________________________
> > R-help using r-project.org mailing list -- To UNSUBSCRIBE and more, see
> > https://stat.ethz.ch/mailman/listinfo/r-help
> > PLEASE do read the posting guide
> http://www.R-project.org/posting-guide.html
> > and provide commented, minimal, self-contained, reproducible code.
> >
>
> ______________________________________________
> R-help using r-project.org mailing list -- To UNSUBSCRIBE and more, see
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide
> http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
>

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