对一段有关Go Code Block和变量作用域的代码的简要分析 原创 Tony Bai TonyBai 2018-05-11
对一段有关Go Code Block和变量作用域的代码的简要分析
2018-05-11
https://mp.weixin.qq.com/s/vD8jOjkt_kBc9fd8huIUAQ
Each file has a file block containing all Go source text in that file.
4. Each "if", "for", and "switch" statement is considered to be in its own implicit block.
5. Each clause in a "switch" or "select" statement acts as an implicit block.
func writeDb(Type int) bool {
var B bool
switch Type {
case 1:
B = true
}
return B
}
type T struct {
B bool
}
func writeDb1(Type int) (t T) {
var B bool
switch Type {
case 1:
B = true
}
t.B = B
return
}
func main() {
i := writeDb(1)
j := writeDb(2)
i1 := writeDb1(1)
j1 := writeDb1(2)
fmt.Println(i,j,i1,j1)