Code shared from the Rust Playground

playground.rs

fn add<F>(v: &mut Vec<F>, f: F) {
    v.push(f);
}

fn hoge(i: i32) -> i32 {
    i + 1
}
fn fuga(i: i32) -> i32 {
    i * 2
}

fn main() {
    let mut v = vec![];
    add(&mut v, hoge);
    add(&mut v, fuga);
}