43 lines
1.1 KiB
Rust
43 lines
1.1 KiB
Rust
// run-rustfix
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#![warn(clippy::get_first)]
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use std::collections::BTreeMap;
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use std::collections::HashMap;
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use std::collections::VecDeque;
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struct Bar {
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arr: [u32; 3],
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}
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impl Bar {
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fn get(&self, pos: usize) -> Option<&u32> {
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self.arr.get(pos)
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}
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}
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fn main() {
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let x = vec![2, 3, 5];
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let _ = x.get(0); // Use x.first()
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let _ = x.get(1);
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let _ = x[0];
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let y = [2, 3, 5];
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let _ = y.get(0); // Use y.first()
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let _ = y.get(1);
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let _ = y[0];
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let z = &[2, 3, 5];
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let _ = z.get(0); // Use z.first()
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let _ = z.get(1);
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let _ = z[0];
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let vecdeque: VecDeque<_> = x.iter().cloned().collect();
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let hashmap: HashMap<u8, char> = HashMap::from_iter(vec![(0, 'a'), (1, 'b')]);
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let btreemap: BTreeMap<u8, char> = BTreeMap::from_iter(vec![(0, 'a'), (1, 'b')]);
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let _ = vecdeque.get(0); // Do not lint, because VecDeque is not slice.
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let _ = hashmap.get(&0); // Do not lint, because HashMap is not slice.
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let _ = btreemap.get(&0); // Do not lint, because BTreeMap is not slice.
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let bar = Bar { arr: [0, 1, 2] };
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let _ = bar.get(0); // Do not lint, because Bar is struct.
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}
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