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21 lines
545 B
Rust
21 lines
545 B
Rust
#![deny(map_unit_fn)]
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fn foo(items: &mut Vec<u8>) {
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items.sort();
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}
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fn main() {
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let mut x: Vec<Vec<u8>> = vec![vec![0, 2, 1], vec![5, 4, 3]];
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x.iter_mut().map(foo);
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//~^ ERROR `Iterator::map` call that discard the iterator's values
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x.iter_mut().map(|items| {
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//~^ ERROR `Iterator::map` call that discard the iterator's values
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items.sort();
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});
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let f = |items: &mut Vec<u8>| {
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items.sort();
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};
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x.iter_mut().map(f);
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//~^ ERROR `Iterator::map` call that discard the iterator's values
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}
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