this post was submitted on 14 Aug 2023
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Yes it is a hard error and Go does not compile then. You can do
_ = foobarto fake variable usage. I think this is okay for testing purposes.Ew, that's awful. Go is not one of my programming languages but I had always held it in high esteem because Ken Thompson and Rob Pike were involved in it.
Honestly, it does not happen often that I have a ln unused variable that I want to keep. In my mind it is the same thing when wanting to call a function that does not exists. Also my editor is highlighting error Long before I try to compile, so this is fine too for me.
The underscore is used in production code too. It's a legitimate way to tell the compiler to discard the object because you don't intend to use the pointer/value.