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Converts a NULL to NA; or returns the argument unchanged otherwise

Source: R/misc.R
NULL_to_NA.Rd

This is useful for missing list elements (which returns NULL), but when the missing element in refClass should be NA (and NULL would return an error)

Usage

NULL_to_NA(var_or_NULL)

Arguments

var_or_NULL

A variable of any kind or NULL

Examples

  NULL_to_NA(NA)   ## NA
#> [1] NA
  NULL_to_NA(NULL) ## NA
#> [1] NA
  NULL_to_NA("hi") ## "hi"
#> [1] "hi"