Crate sol_prng 

SOL_PRNG

A simple functional pseudo random number generator. No mutability. Relies on shadowing as of now.

Functions:

 
let r = Rand::new(42);
 
// -> true || false
r.next_bool();
 
// -> i32
r.next_i32();
 
// -> u32
r.next_u32();
 
// -> i64
r.next_i64();
 
// -> u64
r.next_u64();
 
// -> u32 in inclusive range (from, to)
r.next_ranged_u32(42, u32::MAX);
 
// -> u64 in inclusive range (from, to)
r.next_ranged_u64(42, u64::MAX);
 

Usage:

 
// Create an initial Rand. For non-determinism use something like the system
// time as a seed.
let r = Rand::new(42);
 
// Shadows previous Rand, creates n (holds your result).
let (r, n) = r.next_i32();
println!("n: {}", n);
 
// Shadows previous Rand, shadows n (holds your new result).
let (r, n) = r.next_i32();
println!("n: {}", n);
 
// It does not matter the type of the last generated value.
let (r, n) = r.next_bool();
println!("n: {}", n);
 
let (r, n) = r.next_u64();
println!("n: {}", n);
 
let (r, n) = r.next_ranged_u32(1, 255);
println!("n: {}", n);
 

Structs

Rand

Describes the state of a Rand generator. Member functions do not alter it’s fields, but return a new Rand instead.