Struct proptest_arbitrary::Probability

pub struct Probability(_);

A probability in the range [0.0, 1.0] with a default of 0.5.

Methods

impl Probability

fn new(prob: f64) -> Self

Creates a Probability from a f64.

Safety

Panics if the probability is outside interval [0.0, 1.0].

fn with<X>(self, and: X) -> HCons<Self, HCons<X, HNil>>

Merges self together with some other argument producing a product type expected by some impelementations of A: Arbitrary<'a> in A::Parameters. This can be more ergonomic to work with and may help type inference.

fn lift<X: Default>(self) -> HCons<Self, HCons<X, HNil>>

Merges self together with some other argument generated with a default value producing a product type expected by some impelementations of A: Arbitrary<'a> in A::Parameters. This can be more ergonomic to work with and may help type inference.

Trait Implementations

impl Default for Probability

fn default() -> Self

Returns the "default value" for a type.

impl From<f64> for Probability

fn from(prob: f64) -> Self

Creates a Probability from a f64.

Safety

Panics if the probability is outside interval [0.0, 1.0].

impl<'a> Arbitrary<'a> for Probability

type ValueTree = <Self::Strategy as Strategy>::Value

The type of [ValueTree] used for Self's [Strategy].

type Parameters = ()

The type of parameters that [arbitrary_with] accepts for configuration of the generated [Strategy]. Parameters must implement [Default].

type Strategy = SMap<Range<f64>, FromMapper<ValueFor<Range<f64>>, Self>>

The type of [Strategy] used to generate values of type Self.

fn arbitrary_with(_args: Self::Parameters) -> Self::Strategy

Generates a [Strategy] for producing arbitrary values of type the implementing type (Self). The strategy is passed the arguments given in args.

fn arbitrary() -> Self::Strategy

Generates a [Strategy] for producing arbitrary values of type the implementing type (Self).

impl Generic for Probability

type Repr = f64

The generic representation type

fn into(self) -> Self::Repr

Converts the Probability into an f64.

fn from(r: Self::Repr) -> Self

Creates a Probability from a f64.

Safety

Panics if the probability is outside interval [0.0, 1.0].

fn convert_from<A>(a: A) -> Self where
    A: Generic<Repr = Self::Repr>, 

From one type to another using a type with a compatible generic representation

impl Clone for Probability

fn clone(&self) -> Probability

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Copy for Probability

impl PartialEq for Probability

fn eq(&self, __arg_0: &Probability) -> bool

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

fn ne(&self, __arg_0: &Probability) -> bool

This method tests for !=.

impl Debug for Probability

fn fmt(&self, __arg_0: &mut Formatter) -> Result

Formats the value using the given formatter.