structure Struct in Go

In Go, a struct is a grouping of zero or more values with different types. It's similar to a class in object-oriented programming.

To define a struct in Go, you use the type keyword, followed by the name of the struct, and a set of curly braces that contains the names and types of each field in the struct.

Here's an example:

type Person struct {
    Name string
    Age  int
}

This struct, named Person, has two fields: Name, which is of type string, and Age, which is of type int.

You can create a new instance of the Person struct using the var keyword, followed by the name of a variable, and then initializing the fields of the struct with a set of braces.

var p1 Person = Person{
    Name: "Alice",
    Age:  32,
}

You can access the fields of the struct using the . operator.

fmt.Println(p1.Name) // prints "Alice"
fmt.Println(p1.Age)  // prints "32"

You can also define methods on structs using the same syntax as with regular functions, but with the receiver keyword before the name of the struct. For example:

func (p Person) Greet() string {
    return fmt.Sprintf("Hi, my name is %s and I'm %d years old.", p.Name, p.Age)
}
fmt.Println(p1.Greet()) // prints "Hi, my name is Alice and I'm 32 years old."

This method, named Greet, takes a Person struct as a receiver and returns a string that includes the person's name and age. You can call this method on any instance of the Person struct.