The UnaryOperator class.
This base class represents expressions involving unary operators. class
## S4 method for signature 'UnaryOperator' name(x) ## S4 method for signature 'UnaryOperator' to_numeric(object, values)
x, object
: A UnaryOperator object.values
: A list of arguments to the atom.name(UnaryOperator)
: Returns the expression in string form.to_numeric(UnaryOperator)
: Applies the unary operator to the value.expr
: The Expression that is being operated upon.op_name
: A character
string indicating the unary operation.