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by flowerlad
1864 days ago
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> Java methods kind of let you ignore them through declaring exceptions, with this idea that, well, somebody else will deal with it. Sure, you can write sloppy code in Java, but I am sure you can write sloppy code in Go too. |
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As you write code in a language with explicit errors, the language makes you acknowledge that the code you call can error out. This makes you stop and think what to do about the error. You can choose to ignore it, but that's a conscious decision that the language forces you to make.
With exceptions, there's no such feedback mechanism from the language/compiler. In order to write robust code you yourself must have the discipline to add exception handlers around the appropriate calls.
In short, defaults matter. It's simply easier to write correct, robust code when you don't have to go out of your way to do it.
See https://devblogs.microsoft.com/oldnewthing/20050114-00/?p=36...:
> It’s really hard to write good exception-based code since you have to check every single line of code (indeed, every sub-expression) and think about what exceptions it might raise and how your code will react to it.
... which leads us straight to favorite exceptions-caused bug: https://nedbatchelder.com//blog/202001/bug_915_solved.html:
> Inside tempfile.NamedTemporaryFile, the error handling misses the possibility that _TemporaryFileWrapper will fail.