Defer / Defer in depth / Essential Go
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package main
import "fmt"
func plusOne(i int) (result int) {
// anonymous function must be called by adding ()
defer func() { result++ }()
// i is returned as result, which is updated by deferred function above
// after execution of below return
return i
}
func main() {
fmt.Println(plusOne(1)) // 2
}
Go
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