UnaryOpUGens are created as the result of a unary operator applied to a UGen.
As in the examples given here, you don't usually need to instantiate UnaryOpUGen yourself.
The unary and binary operators are defined in UGen's superclass AbstractFunction, which creates the BinaryOpUGen as a result of the operation.
See Operators for an overview of common operators.
return a new instance that applies the operator selector to the ugen a
| selector |
The selector symbol for the unary operator |
| a |
operand |