jindeveloper

using System;

namespace CSharp_Attributes_Walkthrough.My_Custom_Attributes
{
    /// <summary>
    /// This class is a custom attribute class. 
    /// Moreover, it is using the AttributeUsage attribute to annotate
    /// that this attribute is applicable only to class, struct and property.
    /// </summary>
    [AttributeUsage(AttributeTargets.Class | AttributeTargets.Struct | AttributeTargets.Property)]

jindeveloper

using System;
namespace CSharp_Attributes_Walkthrough.My_Custom_Attributes
{
 public class AliasAttribute : Attribute
 {
   //This is how to define a custom attributes.
 }
}

jindeveloper

using System;
 
namespace CSharp_Attributes_Walkthrough.My_Custom_Attributes
{
    public class AliasAttribute : Attribute
    {
        /// <summary>
        /// These parameters will become mandatory once have you decided to use this attribute.
        /// </summary>
        /// <param name="alias"></param>

jindeveloper

using CSharp_Attributes_Walkthrough.My_Custom_Attributes;
using System;
 
namespace CSharp_Attributes_Walkthrough.My_Custom_Attributes
{
    public class AliasAttribute : Attribute
    {
        //....
 
        //Added an optional-parameter

jindeveloper

[Fact]
public void Test_GetAll_AttributeTargets()
{
    var targets = Enum.GetNames(typeof(AttributeTargets));
 
    foreach (var target in targets)
    {
        this._output.WriteLine($"AttributeTargets.{target}");
    }
 

jindeveloper

using CSharp_Attributes_Walkthrough.My_Custom_Attributes;
using System;
 
namespace Implementing_Csharp_Attributes_101
{
    class Program
    {
        static void Main(string[] args)
        {
            var customer = new Customer { Firstname = "Jin Vincent" , LastName = "Necesario" };

jindeveloper

using System;
using System.Linq;
 
namespace CSharp_Attributes_Walkthrough.My_Custom_Attributes
{
    [Alias("Filipino_Customers", ConsoleColor.Yellow)]
    public class Customer
    {
        [Alias("Fname", ConsoleColor.White, AlternativeName = "Customer_FirstName")]
        public string Firstname { get; set; }

jindeveloper

/*forEach loop*/
let amounts = [1.25, 2.25, 3.25, 4.25];

/**
 * Outputs: 
 * 1.25
 * 2.25
 * 3.25
 * 4.25
 */

jindeveloper

const TOTAL_WORKING_DAYS = 261;

const getDailyRate = salary => Math.floor(((salary * 12) / (TOTAL_WORKING_DAYS)));

const dailyRate = employee => Object.assign({}, { employee: employee.employee, dailyRate: getDailyRate(employee.salary) });

//Returns a new set of empoloyees with dailyRate and name
const newEmployees = employees.map(dailyRate);

//new data

jindeveloper

const TOTAL_WORKING_DAYS = 261;

//Horrible in my opinion, worst someone will say it is ugly.
const dailyRate = (item, index, array) => array[index].dailyRate = Math.floor(((item.salary * 12) / (TOTAL_WORKING_DAYS)));

//undefined as forEach doesn't return any results.
let dailyRateEmployeeResults = employees.forEach(dailyRate);

console.log(dailyRateEmployeeResults);//undefined