Check if Selected Columns in a Data Frame Contain Missing Values
has_no_missing_values(x, names)
A list with two elements: 1) rqmt_ok
which is TRUE
if
the requirement is fulfilled and FALSE
otherwise; 2)
err_message
, the body of an error message to be used by the calling
function (mentions all problematic elements)
a data.frame
character
vector containg the names of the columns in
x
to be checked