How to iterate a Vec <T> with an indexed position?

Question

I need to iterate over Vec , but I need a position for each iteration element. I am sure that this is already in the API, but I do not see it.

I need something like this:

 fn main() { let v = vec![1;10]; for (pos, e) in v.iter() { // do something here } } 

Answer 1

You can use the enumerate () function:

 fn main() { let v = vec![1;10]; for (pos, e) in v.iter().enumerate() { println!("Element at position {}: {:?}", pos, e); } } 

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