Struct LazyStream 

pub struct LazyStream<T> { /* private fields */ }

A purely Rust-level lazy stream (for algorithm testing).

Unlike the OxiLean expression-level Stream, this is a Rust iterator wrapper.

Implementations

impl<T> LazyStream<T>

pub fn from_fn(gen: impl FnMut() -> Option<T> + 'static) -> Self

Create a stream from a generator function.

pub fn constant(val: T) -> Self

where T: Clone + 'static,

Create an infinite stream that always yields the same value.

pub fn iterate(init: T, f: impl FnMut(T) -> T + 'static) -> Self

where T: Clone + 'static,

Create a stream that iterates init, f(init), f(f(init)), ....

pub fn next(&mut self) -> Option<T>

Advance the stream and get the next element.

pub fn take(self, n: usize) -> Vec<T>

Take the first n elements.