Classes and constructor in #golang.

employee.go

package employee

import "fmt"

// employee represents an employee
type employee struct {
	firstName   string
	lastName    string
	totalLeaves int
	leavesTaken int
}

// New construct a new employee
func New(firstName string, lastName string, totalLeaves int, leavesTaken int) employee {
	e := employee{firstName, lastName, totalLeaves, leavesTaken}
	return e
}

func (e employee) LeavesRemaining() {
	fmt.Printf("%s %s has %d leaves remaining\n", e.firstName, e.lastName, (e.totalLeaves - e.leavesTaken))
}

main.go

package main

import "oop/employee"

func main() {
	e := employee.New("Santosh", "Kumar", 5, 4)
	e.LeavesRemaining()
}