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Go subtleties

(harrisoncramer.me)
235 points darccio | 1 comments | 13 Oct 25 07:42 UTC | HN request time: 0s | source
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callc ◴[22 Oct 25 15:08 UTC] No.45670316[source]▶
I had a “wtf” moment when using Go around panic() and recover()

I was so surprised by the design choice to need to put recover in in deferred function calls. It’s crazy to smush together the error handling and normal execution code.

replies(2): >>45670956 #>>45672793 #
1. gethly ◴[22 Oct 25 17:57 UTC] No.45672793[source]▶
Semantics. Go at least does not restrict you to wrap every single panicky call.

func Foo() { try { maybePanic() } catch (err any) { doSomething(err) }

  .. more code
}

vs

func Foo() { defer func() { if err := recover(); err != nil { doSomething(err) } }()

  maybePanic()

  .. more code
}