Things about programming I learned with Go

Re:Things about programming I learned with Go by concede_pluto on Wednesday August 23, 2017 @10:35PM (#15087186)

In Go, if you call three functions you need to repeat the

  x, err := do_something()
  if err != nil {
          return nil, err
  }

ceremony three times. In Java it happens by default, because the language designers agreed this is by far the most common case.

Ignoring an error is almost always a serious mistake, so the fact that Go makes it easy and not blatant is not a good thing.

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Re:Things about programming I learned with Go by _ph_ on Friday August 25, 2017 @10:52AM (#15098849)

Yes, I certainly was not advocating ignoring any error. Which is, why exceptions are of dubious use. If you only check exceptions around a larger block of function calls, or every several levels of the call stack, then you might miss the exact source of the exception, unless the exception type is unambiguous. That is, why I find the Go version tedious for sure, but still better than to wrap single function calls into try... catch.

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Re:Things about programming I learned with Go by vram22 on Thursday August 24, 2017 @07:09AM (#15089109)

>ceremony three times. In Java it happens by default,

What happens by default? Not clear. (I know Java, but not up to date with recent versions.)

>Ignoring an error is almost always a serious mistake

Agreed.

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Re:Things about programming I learned with Go by concede_pluto on Thursday August 24, 2017 @01:37PM (#15092206)

In Java, an exception outside a catch block automatically stops the method and raises the exception to the caller, and then their caller, and so on. In Go you have to write this after every function call (except the tiny minority that can only panic).

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Re:Things about programming I learned with Go by vram22 on Saturday August 26, 2017 @05:28PM (#15107571)

Thanks. I did know that about Java (having used it), just that it was not clear to me from your earlier wording, that that is what you were saying. NP.

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