Go by Example:switch

The switch statement expresses the conditional judgment through a number of branches.

Package Mainimport "FMT" import "Time" Func main () {    //base switch usage    i: = 2    fmt. Print ("Write", I, "as")    switch I {case    1:        FMT. Println ("one") Case    2:        FMT. Println ("both") Case    3:        FMT. Println ("three")    }    //You can use commas to separate multiple conditions in a case. You can also use the default statement.    Execute the logical block specified by default when none of the above cases are satisfied.    switch time. Now (). Weekday () {case Time    . Saturday, time. Sunday:        FMT. Println ("It ' s The weekend")    default:        FMT. Println ("It's a weekday")    }    //When switch does not follow the expression, the function and the if/else are the same,    //Here we can see that the expression after the case is not necessarily a constant.    T: = time. Now ()    switch {case    t.hour () <:        FMT. Println ("It ' s before noon")    default:        FMT. Println ("It ' s after noon")    }}

Output

$ go Run switch.go Write 2 as Twoit ' s the Weekendit ' s before noon

Next example: Go by Example:arrays.

English original

Go by Example:switch