# DistMap in rand::distributions - Rust
A distribution of values of type `S` derived from the distribution `D` by mapping its output of type `T` through the closure `F`.
Keywords: rust, rustlang, rust-lang, DistMap

# Struct rand::distributions::DistMap

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    pub struct DistMap<D, F, T, S> { /* private fields */ }

Expand description

A distribution of values of type `S` derived from the distribution `D` by mapping its output of type `T` through the closure `F`.

This `struct` is created by the `Distribution::map` method. See its documentation for more.

## Trait Implementations

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### impl<D: Debug, F: Debug, T: Debug, S: Debug> Debug for DistMap<D, F, T, S>

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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<D, F, T, S> Distribution<S> for DistMap<D, F, T, S> where
D: Distribution<T>,
F: Fn(T) -> S,

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#### fn sample<R: Rng + ?Sized>(&self, rng: &mut R) -> S

Generate a random value of `T`, using `rng` as the source of randomness.

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#### fn sample_iter<R>(self, rng: R) -> DistIter<Self, R, T>ⓘNotable traits for DistIter<D, R, T>`impl<D, R, T> Iterator for DistIter<D, R, T> where
D: Distribution<T>,
R: Rng, type Item = T;` where
R: Rng,
Self: Sized,

Create an iterator that generates random values of `T`, using `rng` as the source of randomness. Read more

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#### fn map<F, S>(self, func: F) -> DistMap<Self, F, T, S> where
F: Fn(T) -> S,
Self: Sized,

Create a distribution of values of ‘S’ by mapping the output of `Self` through the closure `F` Read more

## Auto Trait Implementations

### impl<D, F, T, S> RefUnwindSafe for DistMap<D, F, T, S> where
D: RefUnwindSafe,
F: RefUnwindSafe,

### impl<D, F, T, S> Send for DistMap<D, F, T, S> where
D: Send,
F: Send,

### impl<D, F, T, S> Sync for DistMap<D, F, T, S> where
D: Sync,
F: Sync,

### impl<D, F, T, S> Unpin for DistMap<D, F, T, S> where
D: Unpin,
F: Unpin,

### impl<D, F, T, S> UnwindSafe for DistMap<D, F, T, S> where
D: UnwindSafe,
F: UnwindSafe,

## 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

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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>,

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, U> TryFrom<U> 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<U>>::Error>

Performs the conversion.

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

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

The type returned in the event of a conversion error.

const: unstable · source

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

Performs the conversion.

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

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#### fn vzip(self) -> V