mirror of
https://github.com/rust-lang/rust-clippy
synced 2024-11-10 23:24:24 +00:00
b63a5b56d6
Lint `if _.[!]contains_key(&_) { .. } else { .. }` so long as one of the branches contains an insertion.
60 lines
1 KiB
Rust
60 lines
1 KiB
Rust
// run-rustfix
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#![allow(unused, clippy::needless_pass_by_value, clippy::collapsible_if)]
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#![warn(clippy::map_entry)]
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use std::collections::{BTreeMap, HashMap};
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use std::hash::Hash;
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macro_rules! m {
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($e:expr) => {{ $e }};
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}
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fn foo() {}
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fn insert_if_absent0<K: Eq + Hash + Copy, V: Copy>(m: &mut HashMap<K, V>, k: K, v: V, v2: V) {
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if !m.contains_key(&k) {
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m.insert(k, v);
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} else {
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m.insert(k, v2);
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}
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if m.contains_key(&k) {
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m.insert(k, v);
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} else {
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m.insert(k, v2);
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}
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if !m.contains_key(&k) {
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m.insert(k, v);
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} else {
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foo();
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}
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if !m.contains_key(&k) {
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foo();
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} else {
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m.insert(k, v);
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}
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if !m.contains_key(&k) {
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m.insert(k, v);
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} else {
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m.insert(k, v2);
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}
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if m.contains_key(&k) {
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if true { m.insert(k, v) } else { m.insert(k, v2) }
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} else {
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m.insert(k, v)
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};
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if m.contains_key(&k) {
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foo();
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m.insert(k, v)
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} else {
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None
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};
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}
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fn main() {}
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