17 lines
390 B
Rust
17 lines
390 B
Rust
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struct PrintOnDrop<'a>(&'a str);
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impl Drop for PrintOnDrop<'_> {
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fn drop(&mut self) {
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println!("printint: {}", self.0);
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}
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}
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use std::collections::BTreeMap;
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use std::iter::FromIterator;
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fn main() {
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let s = String::from("Hello World!");
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let _map = BTreeMap::from_iter([((), PrintOnDrop(&s))]);
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drop(s); //~ ERROR cannot move out of `s` because it is borrowed
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}
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