Constructors in Go

Question

I have a struct and I would like it to be initialised with some sensible default values.

Typically, the thing to do here is to use a constructor but since go isn\'t

Answer 1

I am new to go. I have another pattern taken from other languages, that have constructors. And will work in go.

1. Create an init method.
2. Make the init method an (object) once routine. It only runs the first time it is called (per object).

func (d *my_struct) Init (){
    //once
    if !d.is_inited {
        d.is_inited = true
        d.value1 = 7
        d.value2 = 6
    }
}

3. Call init at the top of every method of this class.

This pattern is also useful, when you need late initialisation (constructor is too early).

Advantages: it hides all the complexity in the class, clients don't need to do anything.

Disadvantages: you must remember to call Init at the top of every method of the class.