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pub trait GetOutput<O> { fn output(&self) -> Option<O>; }
fn output(&self) -> Option<O>
impl<'a, I, O, E> GetOutput<&'a [O]> for IResult<I, &'a [O], E>
impl<I, E> GetOutput<()> for IResult<I, (), E>
impl<'a, I, E> GetOutput<&'a str> for IResult<I, &'a str, E>