class Nil
The class of nil, the absence of a value. A type T? is T or Nil.
<prelude>:186
Methods
def to_a -> Array[Nothing]
An empty array.
<prelude>:189
def &(other: Object) -> Bool
Always false: nil is falsy. Unlike &&, it evaluates other.
<prelude>:191
def |(other: Object) -> Bool
Whether other is truthy (neither nil nor false). Unlike ||, it
evaluates other and returns a Bool.
<prelude>:194