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@rust-play

rust-play/playground.rs

Created April 10, 2018 18:30
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Code shared from the Rust Playground
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playground.rs
use std::iter::Iterator;
fn main() {
println!("Hello, world!");
other(stream(|| 1));
}
fn other(s: impl Iterator<Item = i32> +'static) -> impl Iterator<Item = i32> + 'static {
s
}
fn stream(supplier: impl Fn() -> i32) -> impl Iterator<Item = i32> {
let items = vec![1, 2, 3];
items.into_iter()
.map(move |n| n + supply(&supplier))
}
fn supply(supplier: impl Fn() -> i32) -> i32 {
supplier()
}
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