rust/src/test/run-pass/issue-7784.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

37 lines
1.1 KiB
Rust

// Copyright 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.
fn foo<T: Add<T, T> + Clone>([x, y, z]: [T, ..3]) -> (T, T, T) {
(x.clone(), x.clone() + y.clone(), x + y + z)
}
fn bar(a: &'static str, b: &'static str) -> [&'static str, ..4] {
[a, b, b, a]
}
fn main() {
assert_eq!(foo([1i, 2i, 3i]), (1i, 3i, 6i));
let [a, b, c, d] = bar("foo", "bar");
assert_eq!(a, "foo");
assert_eq!(b, "bar");
assert_eq!(c, "bar");
assert_eq!(d, "foo");
let [a, _, _, d] = bar("baz", "foo");
assert_eq!(a, "baz");
assert_eq!(d, "baz");
let out = bar("baz", "foo");
let [a, ..xs, d] = out;
assert_eq!(a, "baz");
assert!(xs == ["foo", "foo"]);
assert_eq!(d, "baz");
}