Example
As mentioned in Basics, we can use anything which implements IntoIterator with the for loop:
let vector = vec!["foo", "bar", "baz"]; // vectors implement IntoIterator
for val in vector {
println!("{}", val);
}
Expected output:
foo
bar
baz
Note that iterating over vector in this way consumes it (after the for loop, vector can not be used again). This is because IntoIterator::into_iter moves self.
IntoIterator is also implemented by &Vec<T> and &mut Vec<T> (yielding values with types &T and &mut T respectively) so you can prevent the move of vector by simply passing it by reference:
let vector = vec!["foo", "bar", "baz"];
for val in &vector {
println!("{}", val);
}
println!("{:?}", vector);
Note that val is of type &&str, since vector is of type Vec<&str>.
