Structs , Receivers , pointers in Golang

structs.go

func main(){
  
  type Person struct { //its a defined struct 
    Name string 
    ID   int
    Address Address //types of a property can be itself a struct 
    Contact string
  }
  
  employee := Employeeinfo{ // This is an anonymous struct where along with type u actually initialise the data.
    Name string
    DOB  date
    Address Address
  }{
    Name : "Roshan Sangu", 
    DOB  : 22.05.2011,
    Address : {
      Address_name : "Amsterdam , Rosale lane " ,
      Address_type : "Work" ,
    },
  }
  
  //We can pass structs as arguments in a function (a gotch! of go)
  
  person_info := Person{
    Name    : "Aloha Mendez ",
    ID      : 69 ,
    Address : {
      Address_name : "Amsterdam , Rosale lane " ,
      Address_type : "Work" ,
    },
    Contact  : "+031-667876686",
  }
  
  func modifyName(p Person){
    p.Name = "Melky Mendez "  //intention is to change the name from aloha to melky which wont happen coz its not changin the actual variable rather changing it only within the function scope.
  }
  
  
  //To actually change the name we need to pass the pointer of that structured variable.
  modifyName(&person_info) 
  
  func modifyName(p *Person){
    p.Name = "Melky"  //now this is Actually CHANGING the name of the actual variable
  }
  
  //Receivers work in a different way which makes the function work only for that recived data
  //eg:=
  
  person_info.modifyName("Melky") // the functions becomes a attribute of that struct data
  
  func (p *Person) modifyName(name string){
    p.Name = name
  }