sagar23sj

package main

import (
	"errors"
	"fmt"
)

func main() {

	err := errors.New("it's an error")

sagar23sj

package main

import (
	"fmt"
)

// The error built-in interface type is the conventional interface
// for representing an error condition, with the nil value
// representing no error.

sagar23sj

package errors

// New returns an error that formats as the given text.
// Each call to New returns a distinct error value even if the text is identical.
func New(text string) error {
	return &errorString{text}
}

// errorString is a trivial implementation of error.
type errorString struct {

sagar23sj

package main

import "fmt"

//Area function to calculate Area of Rectangle
func Area(length int, breadth int) int {
	return length * breadth
}

//Area function to calculate Area of Square

sagar23sj

package main

import (
	"fmt"

	"github.com/sagar23sj/Go-OOP/Encapsulation/animal"
)

func main() {
  //Creating an object of type Dog from animal package

sagar23sj

package animal

//Unexported type struct
type animal struct {
	Name string
}

//Exported type Dog embedding type Animal
type Dog struct {
	animal

sagar23sj

package animal

//Exported type struct
type Animal struct {
	Name string
}

//Exported type Dog embedding type Animal
type Dog struct {
	Animal

sagar23sj

package employee

//Exported struct type Employee with employee details
type Employee struct {
	Name   string
	Age    int
	salary float64
}

func (e *Employee) SetSalary(val float64) {

sagar23sj

package employee

//Exported struct type Employee with employee details
type Employee struct {
	Name   string
	Age    int
	salary float64
}

sagar23sj

package counter

// internalCounter is an unexported identifier of integer type
type internalCounter int

// NewInternalCounter creates an object of internalCounter
// with value passed to it and returns
// an object of type internalCounter
func NewInternalCounter(val int) internalCounter {
	return internalCounter(val)