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Implement na_if #1707

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hadley opened this issue Mar 11, 2016 · 1 comment
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Implement na_if #1707

hadley opened this issue Mar 11, 2016 · 1 comment
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@hadley
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@hadley hadley commented Mar 11, 2016

Equivalent of SQL NULL_IF, http://www.resolvinghere.com/sof/6220956.shtml

na_if <- function(x, y) {
  if (length(y) != length(x) && length(y) != 1) {
   stop("`y` must be length 1 or same length as x")
  }

  x[x == y] <- NA
  x
}
@hadley hadley added this to the 0.5 milestone Mar 11, 2016
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@hadley hadley commented Mar 11, 2016

Also need to add SQL translation.

@hadley hadley closed this in fe35a11 Mar 14, 2016
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