mirror of https://github.com/rust-lang/rust
66 lines
1.8 KiB
Rust
66 lines
1.8 KiB
Rust
fn iter<T>(vec: Vec<T>) -> impl Iterator<Item = T> {
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vec.into_iter()
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}
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fn foo() {
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let vec = vec!["one", "two", "three"];
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while let Some(item) = iter(vec).next() { //~ ERROR use of moved value
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//~^ HELP consider moving the expression out of the loop so it is only moved once
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println!("{:?}", item);
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}
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}
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fn bar() {
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let vec = vec!["one", "two", "three"];
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loop {
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//~^ HELP consider moving the expression out of the loop so it is only moved once
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let Some(item) = iter(vec).next() else { //~ ERROR use of moved value
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break;
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};
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println!("{:?}", item);
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}
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}
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fn baz() {
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let vec = vec!["one", "two", "three"];
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loop {
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//~^ HELP consider moving the expression out of the loop so it is only moved once
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let item = iter(vec).next(); //~ ERROR use of moved value
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//~^ HELP consider cloning
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if item.is_none() {
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break;
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}
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println!("{:?}", item);
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}
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}
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fn qux() {
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let vec = vec!["one", "two", "three"];
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loop {
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//~^ HELP consider moving the expression out of the loop so it is only moved once
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if let Some(item) = iter(vec).next() { //~ ERROR use of moved value
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println!("{:?}", item);
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break;
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}
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}
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}
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fn zap() {
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loop {
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let vec = vec!["one", "two", "three"];
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loop {
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//~^ HELP consider moving the expression out of the loop so it is only moved once
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loop {
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loop {
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if let Some(item) = iter(vec).next() { //~ ERROR use of moved value
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println!("{:?}", item);
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break;
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}
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}
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}
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}
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}
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}
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fn main() {
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foo();
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bar();
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baz();
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qux();
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zap();
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}
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