rust/src/test/ui/destructuring-assignment/note-unsupported.rs
Fabian Zaiser de84ad95b4 Implement destructuring assignment for structs and slices
Co-authored-by: varkor <github@varkor.com>
2020-11-11 12:10:52 +00:00

27 lines
1,003 B
Rust

struct S { x: u8, y: u8 }
fn main() {
let (a, b) = (1, 2);
(a, b) = (3, 4); //~ ERROR destructuring assignments are unstable
(a, b) += (3, 4); //~ ERROR invalid left-hand side of assignment
//~| ERROR binary assignment operation `+=` cannot be applied
[a, b] = [3, 4]; //~ ERROR destructuring assignments are unstable
[a, b] += [3, 4]; //~ ERROR invalid left-hand side of assignment
//~| ERROR binary assignment operation `+=` cannot be applied
let s = S { x: 3, y: 4 };
S { x: a, y: b } = s; //~ ERROR destructuring assignments are unstable
S { x: a, y: b } += s; //~ ERROR invalid left-hand side of assignment
//~| ERROR binary assignment operation `+=` cannot be applied
S { x: a, ..s } = S { x: 3, y: 4 };
//~^ ERROR functional record updates are not allowed in destructuring assignments
//~| ERROR destructuring assignments are unstable
let c = 3;
((a, b), c) = ((3, 4), 5); //~ ERROR destructuring assignments are unstable
}