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Very similar to Python's "finally" keyword [0] used in a try block, the "Exit Traps" are meant to allow for clean-up action(s) if a script fails. [0]: https://

• themoonisachees 3y ago
  How is finally() ever useful in any language? What is the difference between try{ #code that can throw errors } catch { #handle error } finally { #code } And try{ #throw err }catch { #handle } #code... Surely in pretty much all languages the two are equivalent, so what is finally's purpose as a token? The trick in this post is different because for one bash doesn't have finally, and even if it did you couldn't use it to catch all of a script's errors.
  • anuragsoni 3y ago
    `finally` will also cover scenarios where the an exception is raised from within catch, or if the catch block doesn't handle an exception that's raised in the `try` block.
  • maskros 3y ago
    If "handle error" in the catch involves rethrowing the error, or another error, or returning an error code from the function, the "finally" block is _still_ executed. Here's a "fun" example in Javascript: function foo() { try { return 42 } finally { return "boo!" } }