3 #![warn(clippy::unnecessary_join)]
7 let vector = vec!["hello", "world"];
10 .map(|item| item.to_uppercase())
12 println!("{}", output);
15 let vector = vec!["hello", "world"];
18 .map(|item| item.to_uppercase())
20 println!("{}", output);
22 // should not be linted
23 let vector = vec!["hello", "world"];
26 .map(|item| item.to_uppercase())
27 .collect::<Vec<String>>()
29 println!("{}", output);
31 // should not be linted
32 let vector = vec!["hello", "world"];
33 let output = vector.iter().map(|item| item.to_uppercase()).collect::<String>();
34 println!("{}", output);