04_go language foundation

package main

import (

	"fmt"

)

func main() {

	a, b := 10, 20

	fmt.Println(a, b)

	A, B = B, A // variable exchange

	fmt.Println(a, b)

	was tmp int

	//  _ anonymous variable, do not discard data processing _ the anonymous variable with the return value of the function, have the advantage

	tmp, _ = a, b

	fmt.Println(tmp)

}