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//@ run-pass
// Test that we can use method notation to call methods based on a
// where clause type, and not only type parameters.
trait Foo {
fn foo(&self) -> i32;
}
impl Foo for Option<i32>
{
fn foo(&self) -> i32 {
self.unwrap_or(22)
}
}
impl Foo for Option<u32>
{
fn foo(&self) -> i32 {
self.unwrap_or(22) as i32
}
}
fn check<T>(x: Option<T>) -> (i32, i32)
where Option<T> : Foo
{
let y: Option<T> = None;
(x.foo(), y.foo())
}
fn main() {
assert_eq!(check(Some(23u32)), (23, 22));
assert_eq!(check(Some(23)), (23, 22));
}
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