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|
use std::sync::Arc;
fn main() {
let mut x = Arc::new(Some(1));
match x {
//~^ HELP consider dereferencing to access the inner value using the Deref trait
//~| HELP consider dereferencing to access the inner value using the Deref trait
Some(_) => {}
//~^ ERROR mismatched types
None => {}
//~^ ERROR mismatched types
}
match &x {
//~^ HELP consider dereferencing to access the inner value using the Deref trait
//~| HELP consider dereferencing to access the inner value using the Deref trait
Some(_) => {}
//~^ ERROR mismatched types
None => {}
//~^ ERROR mismatched types
}
let mut y = Box::new(Some(1));
match y {
//~^ HELP consider dereferencing to access the inner value using the Deref trait
//~| HELP consider dereferencing to access the inner value using the Deref trait
Some(_) => {}
//~^ ERROR mismatched types
None => {}
//~^ ERROR mismatched types
}
let mut z = Arc::new(Some(1));
match z as Arc<Option<i32>> {
//~^ HELP consider dereferencing to access the inner value using the Deref trait
//~| HELP consider dereferencing to access the inner value using the Deref trait
Some(_) => {}
//~^ ERROR mismatched types
None => {}
//~^ ERROR mismatched types
}
let z_const: &Arc<Option<i32>> = &z;
match z_const {
//~^ HELP consider dereferencing to access the inner value using the Deref trait
//~| HELP consider dereferencing to access the inner value using the Deref trait
Some(_) => {}
//~^ ERROR mismatched types
None => {}
//~^ ERROR mismatched types
}
// Normal reference because Arc doesn't implement DerefMut.
let z_mut: &mut Arc<Option<i32>> = &mut z;
match z_mut {
//~^ HELP consider dereferencing to access the inner value using the Deref trait
//~| HELP consider dereferencing to access the inner value using the Deref trait
Some(_) => {}
//~^ ERROR mismatched types
None => {}
//~^ ERROR mismatched types
}
// Mutable reference because Box does implement DerefMut.
let y_mut: &mut Box<Option<i32>> = &mut y;
match y_mut {
//~^ HELP consider dereferencing to access the inner value using the Deref trait
//~| HELP consider dereferencing to access the inner value using the Deref trait
Some(_) => {}
//~^ ERROR mismatched types
None => {}
//~^ ERROR mismatched types
}
// Difficult expression.
let difficult = Arc::new(Some(1));
match (& (&difficult) ) {
//~^ HELP consider dereferencing to access the inner value using the Deref trait
//~| HELP consider dereferencing to access the inner value using the Deref trait
Some(_) => {}
//~^ ERROR mismatched types
None => {}
//~^ ERROR mismatched types
}
}
|
