Golang的坑

1. https://i6448038.github.io/2017/07/28/GolangDetails/

2. new(type)不爲nil
   fmt.Println(new(int)==nil) # false
   var i *int
   fmt.Println(i==nil) # true

3. 一個包裏可以有多個init函數,多個init函數的調用順序 https://golang.org/ref/spec#Program_initialization_and_execution