mirror of
https://github.com/rust-lang/rust-clippy
synced 2024-11-15 09:27:25 +00:00
95 lines
3.3 KiB
Rust
95 lines
3.3 KiB
Rust
#![warn(clippy::iter_kv_map)]
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#![allow(unused_mut, clippy::redundant_clone, clippy::suspicious_map, clippy::map_identity)]
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use std::collections::{BTreeMap, HashMap};
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fn main() {
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let get_key = |(key, _val)| key;
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fn ref_acceptor(v: &u32) -> u32 {
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*v
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}
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let map: HashMap<u32, u32> = HashMap::new();
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let _ = map.iter().map(|(key, _)| key).collect::<Vec<_>>();
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let _ = map.iter().map(|(_, value)| value).collect::<Vec<_>>();
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let _ = map.iter().map(|(_, v)| v + 2).collect::<Vec<_>>();
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let _ = map.clone().into_iter().map(|(key, _)| key).collect::<Vec<_>>();
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let _ = map.clone().into_iter().map(|(key, _)| key + 2).collect::<Vec<_>>();
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let _ = map.clone().into_iter().map(|(_, val)| val).collect::<Vec<_>>();
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let _ = map.clone().into_iter().map(|(_, val)| val + 2).collect::<Vec<_>>();
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let _ = map.clone().iter().map(|(_, val)| val).collect::<Vec<_>>();
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let _ = map.iter().map(|(key, _)| key).filter(|x| *x % 2 == 0).count();
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// Don't lint
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let _ = map.iter().filter(|(_, val)| *val % 2 == 0).map(|(key, _)| key).count();
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let _ = map.iter().map(get_key).collect::<Vec<_>>();
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// Linting the following could be an improvement to the lint
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// map.iter().filter_map(|(_, val)| (val % 2 == 0).then(val * 17)).count();
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// Lint
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let _ = map.iter().map(|(key, _value)| key * 9).count();
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let _ = map.iter().map(|(_key, value)| value * 17).count();
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// Preserve the ref in the fix.
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let _ = map.clone().into_iter().map(|(_, ref val)| ref_acceptor(val)).count();
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// Preserve the mut in the fix.
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let _ = map
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.clone()
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.into_iter()
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.map(|(_, mut val)| {
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val += 2;
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val
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})
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.count();
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// Don't let a mut interfere.
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let _ = map.clone().into_iter().map(|(_, mut val)| val).count();
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let map: BTreeMap<u32, u32> = BTreeMap::new();
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let _ = map.iter().map(|(key, _)| key).collect::<Vec<_>>();
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let _ = map.iter().map(|(_, value)| value).collect::<Vec<_>>();
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let _ = map.iter().map(|(_, v)| v + 2).collect::<Vec<_>>();
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let _ = map.clone().into_iter().map(|(key, _)| key).collect::<Vec<_>>();
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let _ = map.clone().into_iter().map(|(key, _)| key + 2).collect::<Vec<_>>();
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let _ = map.clone().into_iter().map(|(_, val)| val).collect::<Vec<_>>();
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let _ = map.clone().into_iter().map(|(_, val)| val + 2).collect::<Vec<_>>();
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let _ = map.clone().iter().map(|(_, val)| val).collect::<Vec<_>>();
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let _ = map.iter().map(|(key, _)| key).filter(|x| *x % 2 == 0).count();
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// Don't lint
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let _ = map.iter().filter(|(_, val)| *val % 2 == 0).map(|(key, _)| key).count();
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let _ = map.iter().map(get_key).collect::<Vec<_>>();
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// Linting the following could be an improvement to the lint
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// map.iter().filter_map(|(_, val)| (val % 2 == 0).then(val * 17)).count();
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// Lint
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let _ = map.iter().map(|(key, _value)| key * 9).count();
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let _ = map.iter().map(|(_key, value)| value * 17).count();
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// Preserve the ref in the fix.
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let _ = map.clone().into_iter().map(|(_, ref val)| ref_acceptor(val)).count();
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// Preserve the mut in the fix.
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let _ = map
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.clone()
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.into_iter()
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.map(|(_, mut val)| {
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val += 2;
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val
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})
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.count();
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// Don't let a mut interfere.
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let _ = map.clone().into_iter().map(|(_, mut val)| val).count();
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}
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