Detect if this is a shade
This tells us if this column is a shade
is_shade(x) are_shade(x) any_shade(x)
x |
a vector you want to test if is a shade |
logical - is this a shade?
xs <- shade(c(NA, 1, 2, "3")) is_shade(xs) are_shade(xs) any_shade(xs) aq_s <- as_shadow(airquality) is_shade(aq_s) are_shade(aq_s) any_shade(aq_s) any_shade(airquality)
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