Enum rand::distributions::WeightedError

source · [−]

pub enum WeightedError {
    NoItem,
    NegativeWeight,
    AllWeightsZero,
}

Expand description

Error type returned from WeightedIndex::new.

Variants

`NoItem`

The provided iterator contained no items.

`NegativeWeight`

A weight lower than zero was used.

`AllWeightsZero`

All items in the provided iterator had a weight of zero.

Trait Implementations

source

impl Clone for WeightedError

source

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

source

impl Debug for WeightedError

source

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

Formats the value using the given formatter. Read more

source

impl Display for WeightedError

source

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

Formats the value using the given formatter. Read more

source

impl Error for WeightedError

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

1.30.0 · source

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

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

source

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

source

impl PartialEq<WeightedError> for WeightedError

source

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 !=.

source

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

source

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

source

pub fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

source

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

const: unstable · source

pub fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

source

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

const: unstable · source

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

Mutably borrows from an owned value. Read more

source

impl<T> From<T> for T

const: unstable · source

pub fn from(t: T) -> T

Returns the argument unchanged.

source

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

const: unstable · source

pub fn into(self) -> U

Calls U::from(self).

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

source

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

type Owned = T

The resulting type after obtaining ownership.

source

pub fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more

source

pub 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

source

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

source

pub default fn to_string(&self) -> String

Converts the given value to a String. Read more

source

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

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

Performs the conversion.

source

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

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

Performs the conversion.

Enum rand::distributions::WeightedError

Variants

NoItem

NegativeWeight

AllWeightsZero

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 description(&self) -> &str

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

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

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

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,

pub fn type_id(&self) -> TypeId

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

pub fn borrow(&self) -> &T

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

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

impl<T> From<T> for T

pub fn from(t: T) -> T

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

pub fn into(self) -> U

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

type Owned = T

pub fn to_owned(&self) -> T

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

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

pub default fn to_string(&self) -> String

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

type Error = Infallible

pub 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

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

`NoItem`

`NegativeWeight`

`AllWeightsZero`

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>,