Type Alias OptUnaryFunctionFn 

pub type OptUnaryFunctionFn = Option<UnaryFunctionFn>;

Aliased Type

pub enum OptUnaryFunctionFn {
    None,
    Some(fn(&Vec<Type>, &Type, Object) -> Result<Object, String>),
}

Variants

None

No value.

Some(fn(&Vec<Type>, &Type, Object) -> Result<Object, String>)

Some value of type T.