[Rd] How to build a list with missing values? What is missing, anyway?

[Bert Gunter]

Why not just use the list constructor:

theList <- setNames(vector("list",3),letters[1:3])

## The list components are empty = NULL, not NA)

This also doesn't seem to be an R-devel topic.

-- Bert

On Wed, Oct 3, 2012 at 11:21 PM, Josh O'Brien <joshmobrien at gmail.com> wrote:
>
>>Say I have argnames <- c("a", "b", "c").
> >From that I want to construct the equivalent of alist(a=, b=, c=).
>
> Here's a one liner that'll do that for you:
>
> argnames <- letters[1:3]
> setNames(rep(list(bquote()), length(argnames)), argnames)
>
> - Josh
>
>
>
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-- 

Bert Gunter
Genentech Nonclinical Biostatistics

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