Playing with Digits kata

playing-with-digits.rs

// https://www.codewars.com/kata/playing-with-digits/train/rust
// status: Getting a multiply overflow werror when I "Attempt" 
fn dig_pow(n: i64, p: i32) -> i64 {
    let digits: Vec<_> = n.to_string().chars().map(|d| d.to_digit(10).unwrap()).collect();

    
    let mut sum: u64 = 0;
    let mut i: u32 = 0;
    for digit in digits {
        
        let power = p as u32 + i;
        println!("This digit is {}", digit);
        println!("This power is {}", power);
        let to_add: u64 = digit.pow(power).into();
        println!("Calculated to_add as {}", to_add);
        sum += to_add as u64;
        println!("So sum is now {}", sum);
        i = i + 1;
    }

    if sum % n as u64 == 0 {
      return (sum / n as u64) as i64
     } else {
      -1
     }

}

for digit: u64 in digits maybe?

got it

fn dig_pow(n: i64, p: i32) -> i64 {
    let digits: Vec<_> = n.to_string().chars().map(|d| d).collect();

    
    let mut sum: u64 = 0;
    let mut i: u32 = 0;
    for digit in digits {
        let digit: u64 = digit.to_digit(10).unwrap().into();
        let power = p as u32 + i;
        println!("This digit is {}", digit);
        println!("This power is {}", power);
        let to_add: u64 = digit.pow(power).into();
        println!("Calculated to_add as {}", to_add);
        sum += to_add as u64;
        println!("So sum is now {}", sum);
        i = i + 1;
    }

    if sum % n as u64 == 0 {
      return (sum / n as u64) as i64
     } else {
      -1
     }

}