[Rd] list comprehension to create an arbitrary-sized list with arbitrary names/values

Erik Iverson eriki at ccbr.umn.edu
Wed Oct 13 21:35:11 CEST 2010

This question probably belongs on R-help instead of R-devel.

What works best for you will depend on how big 'mylist' is.

An article discussing some possibilities can be found at:

Hope this helps,

Steve Kim wrote:
> In python, one can do this
> mydict = dict([(keyfun(x), valfun(x)) for x in mylist])
> to create a dictionary with whatever keys and values we want from an
> input list of arbitrary size. In R, I want to similarly create a list
> with names/values that are generated by some keyfun and valfun
> (assuming that keyfun is guaranteed to return something suitable as a
> name). How can I do this?
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