As early as your freshman year of college—or even earlier—you might have realized that writing arr[len(arr)] is a bad idea. Surely, no one could get that wrong, right? We thought the same thing...
  • who@feddit.orgEnglish
    3·
    13 天前

    This is a thinly veiled advertisement.

    tl;dr: The length of a slice is not a valid index into that slice.

    Of course. Because Go uses zero-based indexing, just like many other languages.

  • uuj8za@piefed.socialEnglish
    2·
    12 天前

    tl;dr arr[len(arr)] is wrong; arr[len(arr)-1] is right because Go uses zero-based indexes like a bunch of other languages.