AusIV

This post presents an interesting way to make error handling more brief in Golang 1.18

One of the downsides to this approach is that defer functions and catching panics can be generally more expensive than using if/return for error handling. I decided to benchmark to see how significant the penalty turns out to be.

For some boilerplate, we have a giveError function:

func giveError(b bool) (int, error) {
  if b {
    return 0, fmt.Errorf("given error")

AusIV

0x324454186BB728a3ea55750E0618ff1B18ce6Cf8

AusIV

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• I am ausiv on github.
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To claim this, I am signing this object:

AusIV

import random
import parsley

def roll(x, y, k=None):
    k = k or x
    if k > 0:
       s = slice(0, k)
    else:
      s = slice(k, x)
    return sum(sorted((random.randrange(1, y+1) for _ in range(x)), reverse=True )[s])