Structs / Basic declaration / Essential Go

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package main import ( "fmt" ) // User describes a user type User struct { FirstName, LastName string Email string Age int userID int } // FullName returns full name of a user func (u *User) FullName() string { return fmt.Sprintf("%s %s", u.FirstName, u.LastName) } func main() { // zero value of struct var u User fmt.Printf("u: %#v\n\n", u) // pu is *User i.e. a pointer to User struct pu := new(User) pu.Age = 33 fmt.Printf("*pu: %#v\n", *pu) // &User{} is the same as new(User) pu = &User{} pu.Age = 18 fmt.Printf("*pu: %#v\n", *pu) pu.FirstName, pu.LastName = "Jane", "Doe" fmt.Printf("pu.FullName(): %s\n", pu.FullName()) }
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