is_Yea | R Documentation |
test for objects of type "hd_Yea"
is_Yea(x)
x |
object to be coerced or tested |
returns TRUE or FALSE depending on whether its argument is of type hd_Yea or not.
x <- c(1800:1803, NA)
year_values <- Yea(x)
is_Yea(year_values)
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