stops() is equivalent to stop(..., call. = FALSE). It removes calls
from error messages by default. These are rarely useful and confuse users
more often than they help them.
stopf() is equivalent to stops(sprintf(fmt, ...)). It wraps
base::sprintf() and stops() and is used to construct flexible
error messages.
stops(...)stopf(fmt = "", ...)
Nothing. These functions are used for their side-effect of raising an error.
Further arguments respectively passed to base::stop() and
base::sprintf() by stops() and stopf().
A character of length 1 passed as is to base::sprintf().
Other utility functions:
format_vector(),
str_to(),
vapply_1l()