1.24

Hey guys, editing the post to say that after talking to some people, I noticed that I whole misunderstood how Go dependencies work, and I was expecting some feature that already kind of exists, since just what is used from the code is at the final binary! A special thanks to Laurent Demailly, from Gophers Slack, and to some Reddit users!

After many years working with Ruby, I migrate to Go without much experience with the language. My first friction was with dependency management because I always find it bad, with fuzzy commands and, the worst, without distinction between development and production dependencies, since both of them are included in the binary. Let’s take a look at a go.mod from a PoC:

One of my favorite features in Go is the possibility of writing benchmark tests. At Go 1.24, this feature has a new look, making it easier to use.

To demonstrate these changes, let’s suppose a function that calculates the factorial recursively and one that calculates it through loops.

func FatorialRecursive(n int) int {
  if n == 0 {
    return 1
  }

  return n * FatorialRecursive(n-1)
}

func FatorialLoop(n int) int {
  aux := 1
  for i := 1; i <= n; i++ {
    aux *= i
  }

  return aux
}

Previously, to write a benchmark, it was necessary to write down the whole execution loop of the test. When done, we need to run the command $ go test -bench .