67 lines
1.7 KiB
Rust
67 lines
1.7 KiB
Rust
#![warn(clippy::for_kv_map)]
|
|
#![allow(clippy::used_underscore_binding)]
|
|
|
|
use std::collections::*;
|
|
use std::rc::Rc;
|
|
|
|
fn main() {
|
|
let m: HashMap<u64, u64> = HashMap::new();
|
|
for (_, v) in &m {
|
|
//~^ ERROR: you seem to want to iterate on a map's values
|
|
//~| NOTE: `-D clippy::for-kv-map` implied by `-D warnings`
|
|
let _v = v;
|
|
}
|
|
|
|
let m: Rc<HashMap<u64, u64>> = Rc::new(HashMap::new());
|
|
for (_, v) in &*m {
|
|
//~^ ERROR: you seem to want to iterate on a map's values
|
|
let _v = v;
|
|
// Here the `*` is not actually necessary, but the test tests that we don't
|
|
// suggest
|
|
// `in *m.values()` as we used to
|
|
}
|
|
|
|
let mut m: HashMap<u64, u64> = HashMap::new();
|
|
for (_, v) in &mut m {
|
|
//~^ ERROR: you seem to want to iterate on a map's values
|
|
let _v = v;
|
|
}
|
|
|
|
let m: &mut HashMap<u64, u64> = &mut HashMap::new();
|
|
for (_, v) in &mut *m {
|
|
//~^ ERROR: you seem to want to iterate on a map's values
|
|
let _v = v;
|
|
}
|
|
|
|
let m: HashMap<u64, u64> = HashMap::new();
|
|
let rm = &m;
|
|
for (k, _value) in rm {
|
|
//~^ ERROR: you seem to want to iterate on a map's keys
|
|
let _k = k;
|
|
}
|
|
|
|
let m: HashMap<u64, u64> = HashMap::new();
|
|
let rm = &m;
|
|
'label: for (k, _value) in rm {
|
|
//~^ ERROR: you seem to want to iterate on a map's keys
|
|
let _k = k;
|
|
if *k == 0u64 {
|
|
break 'label;
|
|
}
|
|
}
|
|
|
|
// The following should not produce warnings.
|
|
|
|
let m: HashMap<u64, u64> = HashMap::new();
|
|
// No error, _value is actually used
|
|
for (k, _value) in &m {
|
|
let _ = _value;
|
|
let _k = k;
|
|
}
|
|
|
|
let m: HashMap<u64, String> = Default::default();
|
|
for (_, v) in m {
|
|
let _v = v;
|
|
}
|
|
}
|