Autorit?Rer Charakter Test. If (identical(pols4,character(0))) { print('empty') } else { print('not empty') }. This test was created by getting volunteers to rate the perceived personality of a variety of characters (currently 1,000).

The rlang package has the function is_empty(), which does exactly what you want.

Statussymbol und repr�sentationsproblematik in k. This test was created by getting volunteers to rate the perceived personality of a variety of characters (currently 1,000). On your first run, please answer as close to what you'd actually chose. The respiratory exchange ratio (rer) is the ratio between the amount of carbon dioxide (co2) produced in metabolism and oxygen (o2) used.