yutannihilation/missingness-can-be-lost.md

Created July 12, 2018 11:00

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Missingness won't propagate if the default value is set.

Raw

missingness-can-be-lost.md

func1 <- function(dummy = 1) {
  missing(dummy)
}

func1()
#> [1] TRUE

func2 <- function(dummy = 1) {
  func1(dummy=dummy)
}

func2()
#> [1] FALSE

Created on 2018-07-12 by the reprex package (v0.2.0).

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