for循环和select和select的区别是什么？

Question

Could not fully understand it from the docs or google:

What are the differences between the two and in Which case would you use each one?

    for{
       select{
       case s := <-something:
           fmt.Println(s)
       case done := <-true:
           return 
       }
    }

and

       select{
       case s := <-something:
           fmt.Println(s)
       case done := <-true:
           return 
       }

Thanks

Answer 1

Code with loop will keep printing data from channel something until it receives anything on channel done.

Select-only code will either print data from channel something or will quit when it receives anything on channel done. Only one case will be executed. Keep in mind there is no fallthrough in Go select and switch statements by default.