gine an implementation
where you constantly put in ".placeHolder." as clearer.
-Original Message-
From: R-help On Behalf Of Deepayan Sarkar
Sent: Sunday, July 21, 2024 1:08 AM
To: Bert Gunter
Cc: R-help
Subject: Re: [R] [External] Using the pipe, |>, syntax with "names&l
I think that the simplicity of setNames is hard to beat:
z |> setNames( c( "a", "foo" ) )
and if you are determined not to load dplyr then
column_rename <- function( DF, map ) {
on <- names( DF )
on[ match( map, on ) ] <- names( map )
names( DF ) <- on
DF
}
is more robust to column reor
The main challenge in Bert's original problem is that `[` and `[<-` cannot
be called in a pipeline. The obvious solution is to define named versions,
e.g.:
elt <- `[`
`elt<-` <- `[<-`
Then,
> z <- data.frame(a = 1:3, b = letters[1:3])
> z |> names() |> elt(2)
[1] "b"
> z |> names() |> elt(2) <-
I second Rich's excellent suggestion.
As with all elegant solutions, Iris's clicked on the wee light bulb in
my brain, and I realized that a slightly more verbose, but perhaps
more enlightening, alternative may be:
z |> attr("names") |> _[2] <- "foo"
However, I would add this as an example *onl
I think Iris's solution should be added to the help file: ?|>
there are no examples there now that show assignment or replacement using the
"_"
> On Jul 20, 2024, at 18:21, Duncan Murdoch wrote:
>
> On 2024-07-20 6:02 p.m., Iris Simmons wrote:
>> z <- data.frame(a = 1:3, b = letters[1:3])
>> z |
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