# col_names must be logical or character and have length Code wrapper_fun(1:3) Condition Error in `wrapper_fun()`: ! `col_names` must be <character>: x `col_names` has class <integer>. --- Code wrapper_fun(factor("a")) Condition Error in `wrapper_fun()`: ! `col_names` must be <character>: x `col_names` has class <factor>. --- Code wrapper_fun(character()) Condition Error in `wrapper_fun()`: ! `col_names` must have length greater than zero. # logical col_names must be TRUE or FALSE Code wrapper_fun(NA) Condition Error in `wrapper_fun()`: ! `col_names` must be either `TRUE` or `FALSE`. --- Code wrapper_fun(c(TRUE, FALSE)) Condition Error in `wrapper_fun()`: ! `col_names` must be either `TRUE` or `FALSE`.
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