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|
// edition:2021
// check-pass
#![warn(unused)]
struct Point {
x: u32,
y: u32,
}
fn test1() {
let t = (String::from("Hello"), String::from("World"));
let c = || {
let (t1, t2) = t;
//~^ WARN unused variable: `t1`
//~| WARN unused variable: `t2`
};
c();
}
fn test2() {
let t = (String::from("Hello"), String::from("World"));
let c = || {
let (t1, _) = t;
//~^ WARN unused variable: `t1`
};
c();
}
fn test3() {
let t = (String::from("Hello"), String::from("World"));
let c = || {
let (_, t2) = t;
//~^ WARN unused variable: `t2`
};
c();
}
fn test4() {
let t = (String::from("Hello"), String::from("World"));
let c = || {
let (_, _) = t;
};
c();
}
fn test5() {
let t = (String::new(), String::new());
let _c = || {
let _a = match t {
(t1, _) => t1,
};
};
}
fn test6() {
let t = (String::new(), String::new());
let _c = || {
let _a = match t {
(_, t2) => t2,
};
};
}
fn test7() {
let t = (String::new(), String::new());
let _c = || {
let _a = match t {
(t1, t2) => (t1, t2),
};
};
}
fn test8() {
let x = 0;
let tup = (1, 2);
let p = Point { x: 10, y: 20 };
let c = || {
let _ = x;
let Point { x, y } = p;
//~^ WARN unused variable: `x`
println!("{}", y);
let (_, _) = tup;
};
c();
}
fn test9() {
let _z = 9;
let t = (String::from("Hello"), String::from("World"));
let c = || {
let (_, t) = t;
println!("{}", t);
};
c();
}
fn main() {
test1();
test2();
test3();
test4();
test5();
test6();
test7();
test8();
test9();
}
|
