Type Alias FnOpaque

pub type FnOpaque<I, O, S = ()> = Opaque<fn(_: &mut dyn FnMut(&mut dyn Parser<Input = I, Output = O, PartialState = S>)), I, O, S>;

Alias over Opaque where the function can be a plain function pointer (does not need to capture any values)

Aliased Type

struct FnOpaque<I, O, S = ()>(/* private fields */);