clojure - Default value when fetching from a list in R -

in clojure can this:

(def x {:a 1 :b 2}) (def y (or (:c x) 111)) 

in r can this:

x = list(a = 1, b = 2) y = {     if ("c" %in% names(x)) {         x$c     } else {         111     } } 

it works, far less elegant. there better way?

defined in dplyr not exported (https://github.com/hadley/dplyr/blob/master/r/utils.r#l81) operator

"%||%" <- function(x, y) if(is.null(x)) y else x 

then can write it

x$a %||% 1111