Exam

Trait Exam 

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pub trait Exam: Downcast {
    // Required method
    fn apply(&mut self) -> Result<(), ExamFailure>;

    // Provided method
    fn name(&self) -> &str { ... }
}

Required Methods§

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fn apply(&mut self) -> Result<(), ExamFailure>

Provided Methods§

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fn name(&self) -> &str

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impl dyn Exam

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pub fn is<__T: Exam>(&self) -> bool

Returns true if the trait object wraps an object of type __T.

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pub fn downcast<__T: Exam>(self: Box<Self>) -> Result<Box<__T>, Box<Self>>

Returns a boxed object from a boxed trait object if the underlying object is of type __T. Returns the original boxed trait if it isn’t.

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pub fn downcast_rc<__T: Exam>(self: Rc<Self>) -> Result<Rc<__T>, Rc<Self>>

Returns an Rc-ed object from an Rc-ed trait object if the underlying object is of type __T. Returns the original Rc-ed trait if it isn’t.

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pub fn downcast_ref<__T: Exam>(&self) -> Option<&__T>

Returns a reference to the object within the trait object if it is of type __T, or None if it isn’t.

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pub fn downcast_mut<__T: Exam>(&mut self) -> Option<&mut __T>

Returns a mutable reference to the object within the trait object if it is of type __T, or None if it isn’t.

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