rustlings

solving rustlings ft. dracuxan
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tests2.rs (447B)

      1 // Calculates the power of 2 using a bit shift.
      2 // `1 << n` is equivalent to "2 to the power of n".
      3 fn power_of_2(n: u8) -> u64 {
      4     1 << n
      5 }
      6 
      7 fn main() {
      8     // You can optionally experiment here.
      9 }
     10 
     11 #[cfg(test)]
     12 mod tests {
     13     use super::*;
     14 
     15     #[test]
     16     fn you_can_assert_eq() {
     17         assert_eq!(power_of_2(0), 1);
     18         assert_eq!(power_of_2(1), 2);
     19         assert_eq!(power_of_2(2), 4);
     20         assert_eq!(power_of_2(3), 8);
     21     }
     22 }