Rust: What is the difference between collect and into_iter?

collect — gather into collection. into_iter — consume iterator.

collect:

• Consume iterator.
• Create collection.
• Type inference.

into_iter:

• Consume collection.
• Create iterator.
• Take ownership.

1let v = vec![1, 2, 3];
2
3// Collect into Vec
4let doubled: Vec<i32> = v.iter().map(|x| x * 2).collect();
5
6// Consume vector
7for item in v.into_iter() {
8    println!("{}", item);
9}

Key: collect to create, into_iter to consume.