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#[cfg(test)] mod test; pub trait Visitor<T>{ type Error; fn visit(&mut self, data: T) -> Result<(), Self::Error>; } pub trait Visit<T>{ fn visit<V: Visitor<T>>(&self, f: &mut V) -> Result<(),V::Error>; }
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#[cfg(test)] mod test; pub trait Visitor<T>{ type Error; fn visit(&mut self, data: T) -> Result<(), Self::Error>; } pub trait Visit<T>{ fn visit<V: Visitor<T>>(&self, f: &mut V) -> Result<(),V::Error>; }