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This is a classic problem you can make in any language. If you were doing Java, and forgot to use `finally` for a resource, you'd have a leak due to an exception.

I do not know what metric you use to define "better"

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`finally' is a word though, harder to forget than a single punctuation mark.

The dev did not "forget a single punctuation mark". It was there and it was correct. What was /not/ correct is that he did not implement any form of implicit resource freeing in an RAII-language. Doing resource management using scopes is a choice. It's not inherently better or worse than explicit resource management with something like Go's `defer`. But if that choice is made, as in Rust or C++, you have to ensure that the implicit resource management is correctly implemented (Drop in Rust, destructors in C++). Same as in Go, where you have to ensure that you call `defer` with the correct cleanup function or in C# where you have to use `using` on your disposables, etc.

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