.checktab: Check Object Class is a Table
Description
Internal utility function confirm that an object
has the attributes needed to be used as data.
Currently it should be a tbl,
data.frame, or data.table.
Usage
.checktab(x, requireNames = TRUE)
Value
An empty string if no issues. Otherwise, a non zero
string with warning/error messages.
Arguments
- x
An object to be evaluated.
- requireNames
A logical, whether names are
required. Defaults to TRUE