rust/src/test/run-pass/block-iter-2.rs
Niko Matsakis 9e3d0b002a librustc: Remove the fallback to int from typechecking.
This breaks a fair amount of code. The typical patterns are:

* `for _ in range(0, 10)`: change to `for _ in range(0u, 10)`;

* `println!("{}", 3)`: change to `println!("{}", 3i)`;

* `[1, 2, 3].len()`: change to `[1i, 2, 3].len()`.

RFC #30. Closes #6023.

[breaking-change]
2014-06-24 17:18:48 -07:00

26 lines
800 B
Rust

// Copyright 2012-2014 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.
extern crate debug;
fn iter_vec<T>(v: Vec<T> , f: |&T|) { for x in v.iter() { f(x); } }
pub fn main() {
let v = vec!(1i, 2, 3, 4, 5);
let mut sum = 0;
iter_vec(v.clone(), |i| {
iter_vec(v.clone(), |j| {
sum += *i * *j;
});
});
println!("{:?}", sum);
assert_eq!(sum, 225);
}