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|
//@ run-pass
// Ensure non-capturing Closure passing CoerceMany work correctly.
fn foo(_: usize) -> usize {
0
}
fn bar(_: usize) -> usize {
1
}
fn add(a: i32, b: i32) -> i32 {
a + b
}
fn main() {
// Coerce result check
type FnPointer = fn(usize) -> usize;
let c = |x| x;
let c_pointer: FnPointer = c;
assert_eq!(c_pointer(42), 42);
let f = match 0 {
0 => foo,
1 => |_| 1,
_ => unimplemented!(),
};
assert_eq!(f(42), 0);
let f = match 2 {
2 => |_| 2,
0 => foo,
_ => unimplemented!(),
};
assert_eq!(f(42), 2);
let f = match 1 {
0 => foo,
1 => bar,
2 => |_| 2,
_ => unimplemented!(),
};
assert_eq!(f(42), 1);
let clo0 = |_: usize| 0;
let clo1 = |_| 1;
let clo2 = |_| 2;
let f = match 0 {
0 => clo0,
1 => clo1,
2 => clo2,
_ => unimplemented!(),
};
assert_eq!(f(42), 0);
let funcs = [add, |a, b| (a - b) as i32];
assert_eq!([funcs[0](5, 5), funcs[1](5, 5)], [10, 0]);
}
|
