23 lines
702 B
Rust
23 lines
702 B
Rust
// Copyright 2012 The Rust Project Developers. See the COPYRIGHT
|
|
// file at the top-level directory of this distribution and at
|
|
// http://rust-lang.org/COPYRIGHT.
|
|
//
|
|
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
|
|
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
|
|
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
|
|
// option. This file may not be copied, modified, or distributed
|
|
// except according to those terms.
|
|
|
|
use std::ops::FnMut;
|
|
|
|
fn call_it<F:FnMut(i32,i32)->i32>(y: i32, mut f: F) -> i32 {
|
|
f(2, y)
|
|
}
|
|
|
|
pub fn main() {
|
|
let f = |x: i32, y: i32| -> i32 { x + y };
|
|
let z = call_it(3, f);
|
|
println!("{}", z);
|
|
assert_eq!(z, 5);
|
|
}
|