3 ms·

… and rampantly introducing the IO monad only to remove it once the culprit is found.

• nequo 4y ago
  Why not use Debug.Trace?
  • thesz 4y ago
    Absolutely second this. Debug.Trace can use event log of RTS which is so cheap it is hard to believe.
  • dllthomas 4y ago
    On rare occasion you actually need to introduce additional sequencing to work out what's going on. In that case, you might well want to keep it after the fact, though, since your fix might depend on that sequencing. But yes, most of the time that you need something like printf debugging, Debug.Trace works great.
    • rowanG077 4y ago
      If you need sequencing you can use `seq` or even `deepseq`