Enum rand::distributions::WeightedError

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pub enum WeightedError {
    NoItem,
    InvalidWeight,
    AllWeightsZero,
    TooMany,
}

Expand description

Error type returned from WeightedIndex::new.

Variants

`NoItem`

The provided weight collection contains no items.

`InvalidWeight`

A weight is either less than zero, greater than the supported maximum, NaN, or otherwise invalid.

`AllWeightsZero`

All items in the provided weight collection are zero.

`TooMany`

Too many weights are provided (length greater than u32::MAX)

Trait Implementations

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impl Clone for WeightedError

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fn clone(&self) -> WeightedError

Returns a copy of the value. Read more

1.0.0 · source

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

Performs copy-assignment from source. Read more

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impl Debug for WeightedError

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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 Display for WeightedError

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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 Error for WeightedError

1.30.0 · source

fn source(&self) -> Option<&(dyn Error + 'static)>

The lower-level source of this error, if any. Read more

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fn backtrace(&self) -> Option<&Backtrace>

🔬 This is a nightly-only experimental API. (backtrace)

Returns a stack backtrace, if available, of where this error occurred. Read more

1.0.0 · source

fn description(&self) -> &str

👎 Deprecated since 1.42.0:

use the Display impl or to_string()

fn cause(&self) -> Option<&dyn Error>

👎 Deprecated since 1.33.0:

replaced by Error::source, which can support downcasting

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impl PartialEq<WeightedError> for WeightedError

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

This method tests for self and other values to be equal, and is used by ==. Read more

1.0.0 · source

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

This method tests for !=.

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impl StructuralPartialEq for WeightedError

Auto Trait Implementations

impl RefUnwindSafe for WeightedError

impl Send for WeightedError

impl Sync for WeightedError

impl Unpin for WeightedError

impl UnwindSafe for WeightedError

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,

const: unstable · source

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,

const: unstable · source

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

Mutably borrows from an owned value. Read more

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impl<T> From<T> for T

const: unstable · source

fn from(t: T) -> T

Returns the argument unchanged.

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

const: unstable · source

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,

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)

🔬 This is a nightly-only experimental API. (toowned_clone_into)

Uses borrowed data to replace owned data, usually by cloning. Read more

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impl<T> ToString for T where
T: Display + ?Sized,

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default fn to_string(&self) -> String

Converts the given value to a String. Read more

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

type Error = Infallible

The type returned in the event of a conversion error.

const: unstable · source

fn try_from(value: U) -> Result<T, <T as TryFrom>::Error>

Performs the conversion.

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impl<T, U> TryInto for T where
U: TryFrom<T>,

type Error = >::Error

The type returned in the event of a conversion error.

const: unstable · source

fn try_into(self) -> Result<U, >::Error>

Performs the conversion.

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impl<V, T> VZip<V> for T where
V: MultiLane<T>,

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Enum rand::distributions::WeightedError

Variants

NoItem

InvalidWeight

AllWeightsZero

TooMany

Trait Implementations

impl Clone for WeightedError

fn clone(&self) -> WeightedError

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

impl Debug for WeightedError

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

impl Display for WeightedError

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

impl Error for WeightedError

fn source(&self) -> Option<&(dyn Error + 'static)>

fn backtrace(&self) -> Option<&Backtrace>

fn description(&self) -> &str

fn cause(&self) -> Option<&dyn Error>

impl PartialEq<WeightedError> for WeightedError

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

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

impl Copy for WeightedError

impl Eq for WeightedError

impl StructuralEq for WeightedError

impl StructuralPartialEq for WeightedError

Auto Trait Implementations

impl RefUnwindSafe for WeightedError

impl Send for WeightedError

impl Sync for WeightedError

impl Unpin for WeightedError

impl UnwindSafe for WeightedError

Blanket Implementations

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

fn type_id(&self) -> TypeId

impl<T> Borrow<T> for T where T: ?Sized,

fn borrow(&self) -> &T

impl<T> BorrowMut<T> for T where T: ?Sized,

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

impl<T> From<T> for T

fn from(t: T) -> T

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

fn into(self) -> U

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

type Owned = T

fn to_owned(&self) -> T

fn clone_into(&self, target: &mut T)

impl<T> ToString for T where T: Display + ?Sized,

default fn to_string(&self) -> String

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

type Error = Infallible

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

impl<T, U> TryInto<U> for T where U: TryFrom<T>,

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

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

impl<V, T> VZip<V> for T where V: MultiLane<T>,

fn vzip(self) -> V

`NoItem`

`InvalidWeight`

`AllWeightsZero`

`TooMany`

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

impl<T> Borrow<T> for T where
T: ?Sized,

impl<T> BorrowMut<T> for T where
T: ?Sized,

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

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

impl<T> ToString for T where
T: Display + ?Sized,

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

impl<T, U> TryInto<U> for T where
U: TryFrom<T>,

impl<V, T> VZip<V> for T where
V: MultiLane<T>,