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PanicKind

Enum PanicKind 

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pub enum PanicKind {
    Overflow,
    DivideByZero,
    DecodeError,
    TypeError,
    DerivationError,
    CapiMisuse,
    Internal,
}
Expand description

The classification of a runtime failure.

This is the panic effect made concrete (design §3.3): anything that can go wrong at runtime is one of these kinds, and hosts receive it through the C ABI as a structured error, never as an unwind.

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Overflow

Integer overflow in an arithmetic primitive.

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DivideByZero

Zero divisor in integer / or %.

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DecodeError

Input JSON rejected by type-directed decode.

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TypeError

A value of the wrong shape reached an operation (defensive; the checker prevents this in checked code).

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DerivationError

A derived operation (eq/compare/hash/show) was invoked on a type marked non-derivable, or reached a closure.

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CapiMisuse

The C ABI was used against its documented contract (undefined TypeId, wrong arity, use after teardown).

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Internal

A bug in the runtime itself, caught at the C ABI boundary.

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impl PanicKind

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pub fn name(self) -> &'static str

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impl Clone for PanicKind

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fn clone(&self) -> PanicKind

Returns a duplicate of the value. Read more
1.0.0 (const: unstable) · Source§

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for PanicKind

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more
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impl PartialEq for PanicKind

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fn eq(&self, other: &PanicKind) -> bool

Tests for self and other values to be equal, and is used by ==.
1.0.0 (const: unstable) · Source§

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl Copy for PanicKind

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impl Eq for PanicKind

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impl StructuralPartialEq for PanicKind

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Blanket Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> CloneToUninit for T
where T: Clone,

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unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dest. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.