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question #29131

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timchenxiaoyu opened this issue Dec 7, 2018 · 1 comment
Closed

question #29131

timchenxiaoyu opened this issue Dec 7, 2018 · 1 comment
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@timchenxiaoyu
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question


func det()(result int){
 result = 2
 defer func() {
  result = 1
  }()
 return result
}

return 1
BUT

func det()(int){
 result := 2
 defer func() {
  result = 1
  }()
 return result
}

return 2

why???
@ianlancetaylor
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This is not the best place for questions. Please see https://golang.org/wiki/Questions .

The first example has a named result parameter, the second does not. If a named result is changed in a defer statement, that changes the result. If a local variable is changed in a defer statement, that does not affect the result.

@golang golang locked and limited conversation to collaborators Dec 7, 2019
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@ianlancetaylor @gopherbot @timchenxiaoyu