rustHow to map with index in Rust

Mapping with index in Rust can be done using the enumerate() method on an iterator. This method returns a tuple of the index and the value of the element.

Example code

let v = vec![1, 2, 3];

for (i, x) in v.iter().enumerate() {
    println!("Index: {}, Value: {}", i, x);
}

Output example

Index: 0, Value: 1
Index: 1, Value: 2
Index: 2, Value: 3

Code explanation

• let v = vec![1, 2, 3];: creates a vector v with elements 1, 2, and 3.
• for (i, x) in v.iter().enumerate(): iterates over the vector v and assigns the index i and the value x of the element to the tuple (i, x).
• println!("Index: {}, Value: {}", i, x);: prints the index i and the value x of the element.

Helpful links

• Rust Documentation - Iterator Enumerate

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