Convert durations in Ruby - hh:mm:ss.sss to milliseconds and vice versa

Question

I was wondering if there is a built-in method in Ruby that allows me to convert lap times in the format of hh:mm:ss.sss to milliseconds and vice versa. Since I need to do some c

Answer 1

Convert seconds into HH:MM:SS in Ruby

t = 323 # seconds
Time.at(t).utc.strftime("%H:%M:%S")
=> "00:03:56"