Description Usage Arguments Details Value Examples
Shortcut for compose(sum, is.na, unlist)
| 1 | nNA(x)
 | 
| x | a vector whose elements are to be tested. | 
As any number different from 0 return a TRUE when coerced to
logical, this function can be used in if statements.
Return the number of NA in x.
| 1 2 3 4 | 
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