Enum rand::distributions::weighted::WeightedError[][src]

pub enum WeightedError {
    NoItem,
    InvalidWeight,
    AllWeightsZero,
    TooMany,
}
This is supported on crate feature alloc only.
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

Returns a copy of the value. Read more

Performs copy-assignment from source. Read more

Formats the value using the given formatter. Read more

Formats the value using the given formatter. Read more

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

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

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

👎 Deprecated since 1.42.0:

use the Display impl or to_string()

👎 Deprecated since 1.33.0:

replaced by Error::source, which can support downcasting

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

This method tests for !=.

Auto Trait Implementations

Blanket Implementations

Gets the TypeId of self. Read more

Immutably borrows from an owned value. Read more

Mutably borrows from an owned value. Read more

Performs the conversion.

Performs the conversion.

The resulting type after obtaining ownership.

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

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

recently added

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

Converts the given value to a String. Read more

The type returned in the event of a conversion error.

Performs the conversion.

The type returned in the event of a conversion error.

Performs the conversion.