[−][src]Trait rand::Rand
A type that can be randomly generated using an Rng.
Built-in Implementations
This crate implements Rand for various primitive types. Assuming the
provided Rng is well-behaved, these implementations generate values with
the following ranges and distributions:
- Integers (
i32,u32,isize,usize, etc.): Uniformly distributed over all values of the type. char: Uniformly distributed over all Unicode scalar values, i.e. all code points in the range0...0x10_FFFF, except for the range0xD800...0xDFFF(the surrogate code points). This includes unassigned/reserved code points.bool: Generatesfalseortrue, each with probability 0.5.- Floating point types (
f32andf64): Uniformly distributed in the half-open range[0, 1). (TheOpen01,Closed01,Exp1, andStandardNormalwrapper types produce floating point numbers with alternative ranges or distributions.)
The following aggregate types also implement Rand as long as their
component types implement it:
- Tuples and arrays: Each element of the tuple or array is generated
independently, using its own
Randimplementation. Option<T>: ReturnsNonewith probability 0.5; otherwise generates a randomTand returnsSome(T).
Required methods
fn rand<R: Rng>(rng: &mut R) -> Self[−]
Generates a random instance of this type using the specified source of randomness.
Implementations on Foreign Types
impl Rand for isize[src][−]
impl Rand for i8[src][−]
impl Rand for i16[src][−]
impl Rand for i32[src][−]
impl Rand for i64[src][−]
impl Rand for usize[src][−]
impl Rand for u8[src][−]
impl Rand for u16[src][−]
impl Rand for u32[src][−]
impl Rand for u64[src][−]
impl Rand for f64[src][−]
fn rand<R: Rng>(rng: &mut R) -> f64[src][−]
Generate a floating point number in the half-open
interval [0,1).
See Closed01 for the closed interval [0,1],
and Open01 for the open interval (0,1).
impl Rand for f32[src][−]
fn rand<R: Rng>(rng: &mut R) -> f32[src][−]
Generate a floating point number in the half-open
interval [0,1).
See Closed01 for the closed interval [0,1],
and Open01 for the open interval (0,1).
impl Rand for char[src][−]
impl Rand for bool[src][−]
impl Rand for ()[src][−]
impl<A: Rand> Rand for (A,)[src][−]
impl<A: Rand, B: Rand> Rand for (A, B)[src][−]
impl<A: Rand, B: Rand, C: Rand> Rand for (A, B, C)[src][−]
impl<A: Rand, B: Rand, C: Rand, D: Rand> Rand for (A, B, C, D)[src][−]
impl<A: Rand, B: Rand, C: Rand, D: Rand, E: Rand> Rand for (A, B, C, D, E)[src][−]
impl<A: Rand, B: Rand, C: Rand, D: Rand, E: Rand, F: Rand> Rand for (A, B, C, D, E, F)[src][−]
impl<A: Rand, B: Rand, C: Rand, D: Rand, E: Rand, F: Rand, G: Rand> Rand for (A, B, C, D, E, F, G)[src][−]
impl<A: Rand, B: Rand, C: Rand, D: Rand, E: Rand, F: Rand, G: Rand, H: Rand> Rand for (A, B, C, D, E, F, G, H)[src][−]
impl<A: Rand, B: Rand, C: Rand, D: Rand, E: Rand, F: Rand, G: Rand, H: Rand, I: Rand> Rand for (A, B, C, D, E, F, G, H, I)[src][−]
impl<A: Rand, B: Rand, C: Rand, D: Rand, E: Rand, F: Rand, G: Rand, H: Rand, I: Rand, J: Rand> Rand for (A, B, C, D, E, F, G, H, I, J)[src][−]
impl<A: Rand, B: Rand, C: Rand, D: Rand, E: Rand, F: Rand, G: Rand, H: Rand, I: Rand, J: Rand, K: Rand> Rand for (A, B, C, D, E, F, G, H, I, J, K)[src][−]
impl<A: Rand, B: Rand, C: Rand, D: Rand, E: Rand, F: Rand, G: Rand, H: Rand, I: Rand, J: Rand, K: Rand, L: Rand> Rand for (A, B, C, D, E, F, G, H, I, J, K, L)[src][−]
impl<T> Rand for [T; 0][src][−]
impl<T> Rand for [T; 1] where
T: Rand, [src][−]
T: Rand,
impl<T> Rand for [T; 2] where
T: Rand, [src][−]
T: Rand,
impl<T> Rand for [T; 3] where
T: Rand, [src][−]
T: Rand,
impl<T> Rand for [T; 4] where
T: Rand, [src][−]
T: Rand,
impl<T> Rand for [T; 5] where
T: Rand, [src][−]
T: Rand,
impl<T> Rand for [T; 6] where
T: Rand, [src][−]
T: Rand,
impl<T> Rand for [T; 7] where
T: Rand, [src][−]
T: Rand,
impl<T> Rand for [T; 8] where
T: Rand, [src][−]
T: Rand,
impl<T> Rand for [T; 9] where
T: Rand, [src][−]
T: Rand,
impl<T> Rand for [T; 10] where
T: Rand, [src][−]
T: Rand,
impl<T> Rand for [T; 11] where
T: Rand, [src][−]
T: Rand,
impl<T> Rand for [T; 12] where
T: Rand, [src][−]
T: Rand,
impl<T> Rand for [T; 13] where
T: Rand, [src][−]
T: Rand,
impl<T> Rand for [T; 14] where
T: Rand, [src][−]
T: Rand,
impl<T> Rand for [T; 15] where
T: Rand, [src][−]
T: Rand,
impl<T> Rand for [T; 16] where
T: Rand, [src][−]
T: Rand,
impl<T> Rand for [T; 17] where
T: Rand, [src][−]
T: Rand,
impl<T> Rand for [T; 18] where
T: Rand, [src][−]
T: Rand,
impl<T> Rand for [T; 19] where
T: Rand, [src][−]
T: Rand,
impl<T> Rand for [T; 20] where
T: Rand, [src][−]
T: Rand,
impl<T> Rand for [T; 21] where
T: Rand, [src][−]
T: Rand,
impl<T> Rand for [T; 22] where
T: Rand, [src][−]
T: Rand,
impl<T> Rand for [T; 23] where
T: Rand, [src][−]
T: Rand,
impl<T> Rand for [T; 24] where
T: Rand, [src][−]
T: Rand,
impl<T> Rand for [T; 25] where
T: Rand, [src][−]
T: Rand,
impl<T> Rand for [T; 26] where
T: Rand, [src][−]
T: Rand,
impl<T> Rand for [T; 27] where
T: Rand, [src][−]
T: Rand,
impl<T> Rand for [T; 28] where
T: Rand, [src][−]
T: Rand,
impl<T> Rand for [T; 29] where
T: Rand, [src][−]
T: Rand,
impl<T> Rand for [T; 30] where
T: Rand, [src][−]
T: Rand,
impl<T> Rand for [T; 31] where
T: Rand, [src][−]
T: Rand,
impl<T> Rand for [T; 32] where
T: Rand, [src][−]
T: Rand,