If let in Swift vs. guard let, guard lowers one branch

1 //using if let to achieve the same effect as guard let, you will find that guard lowers a branch2 //You can use the If Var guard var to indicate that the defined variable can modify the value3 func test () {4Let name:string? = "zhang san"5     6     ifLet A =Name {7 Print (a)8}Else{9Print ("john doe")Ten     } one  aGuard Let C = NameElse { -Print ("john doe") -         return the     } -Print ("c=\ (c)") -  - } +Test ()

If let in Swift vs. guard let, guard lowers one branch