.validate_character_scalar {scenes} | R Documentation |
Ensure that an Argument is Length-1 Character
.validate_character_scalar(parameter, parameter_name, valid_values)
parameter |
The argument to test. |
parameter_name |
The argument's name. Eventually this should be automatically handled through rlang or something, in theory. |
valid_values |
(optional) Expected values of the parameter. |
The parameter if it is character-scalar.