casting - Idiomatic way to do conversion/type assertion on multiple return values in Go -


What is the idiotic way to insert multiple returns values ​​in Go?

Do you need to use it single line, or do you have to use the temporary variable as I did in the example below? Package main import "fmt" func oneRet () interface {} {returns "hello"} Func twoRet () (interface {}, error) {return "Hejsan", nil} func main () {// With a return value, you can just do this str1: = a reset (). (String) fmt.Println ("string1:" + str1) // It is not easy with two return values ​​/ str2, err: = twoRet (). (String) // is not possible / do I really have to use a floating variable? Temporary, err: = twoRet () str2: = temp. (String) fmt.Println ("string 2:" + str2) if mistake! = Nil {Terror ("without accessibility")}}

By the way, is it known as the casting as the interface? 

  i: = interface (Int)    
 
 
 You can not do this in a row  
 
 By the way, is it called Casting while talking about the interface?   
 It is actually called. One type   conversion is different:  
  var is an int var b int64 a = 5 b = int64 (a)

Comments

Post a Comment