DZ/29/07

using System;
using System.Collections;
using System.Collections.Generic;
using System.ComponentModel;
using System.Diagnostics;
using System.Globalization;
using System.IO;
using System.Linq;
using System.Net.NetworkInformation;
using System.Runtime.InteropServices;
using System.Runtime.InteropServices.ComTypes;
using System.Text;
using System.Threading.Tasks;
using Microsoft.SqlServer.Server;

namespace ConsoleApp1
{
    internal class Program
    {
        static void Main(string[] args)
        {
            Temperature temperature = new Temperature();
            temperature.Celsius = -300;
            Console.WriteLine("Celsius: " + temperature.Celsius);
            temperature.Celsius = -273;
            Console.WriteLine("Celsius: " + temperature.Celsius);

            Console.WriteLine("Counter: " + Counter.InstanceCount);
            new Counter();
            Console.WriteLine("Counter: " + Counter.InstanceCount);
            new Counter();
            Console.WriteLine("Counter: " + Counter.InstanceCount);

            StringList stringList = new StringList(10);
            stringList[0] = "1";
            stringList[1] = "2";
            Console.WriteLine("stringList:" + stringList);
            Console.WriteLine("stringList[0]:" + stringList[0]);

            var calculateResult = Calculate(5, 6);
            Console.WriteLine($"X:{calculateResult.x} Y:{calculateResult.y} Distance:{calculateResult.distance}");

            List<Employee> employees = new List<Employee>();
            employees.Add(new Employee("Вася", 5));
            employees.Add(new Employee("Лёша", 3));
            employees.Add(new Employee("Гена", 10));

            GetResume(employees).ToList().ForEach(resume => Console.WriteLine($"Id:[{resume.Item1}] Name:[{resume.Item2}] ExpYears:[{resume.Item3}]"));

            var eventList = new[]
            {
                new{ EventName = "ШП", Date = 3 },
                new{ EventName = "День рождение", Date = 50},
                new{ EventName = "Новый год", Date = 158}
            };
            eventList.ToList().ForEach(eventItem => Console.WriteLine($"Событие:{eventItem.EventName}, Кол-во дней до события:{eventItem.Date}"));

            var listStatistics = new List<(string ProductName, int Sold, double Price)>();
            listStatistics.Add(("Молоко", 5, 50));
            listStatistics.Add(("Снежок", 15, 60));
            // как спроецировать на IEnumerable не понятно
        }

        static (int x, int y, double distance) Calculate(int x, int y)
        {
            return ( x, y, Math.Sqrt(x * x + y * y));
        }

        static IEnumerable<ValueTuple<int,string,int>> GetResume(List<Employee> employees)
        {
            return employees.Select(emp => ValueTuple.Create(emp.Id, emp.Name, emp.ExperienceYears));
        }
    }

    internal class Employee
    {
        private static int _id;

        public int Id;
        public string Name;
        public int ExperienceYears;

        public Employee(string name, int experienceYears)
        {
            _id++;
            Id = _id;
            Name = name;
            ExperienceYears = experienceYears;
        }
    }

    public class Temperature
    {
        private float _celsius;
        public float Celsius
        {
            get { return _celsius; }
            set
            {
                if (value >= -273.15f)
                {
                    _celsius = value;
                }
            }
        }
    }

    public class Counter
    {
        public static int InstanceCount { get; private set; }

        public Counter()
        {
            InstanceCount++;
        }

    }

    public class StringList
    {
        private List<string> list;

        public StringList(int count)
        {
            list = new List<string>();
            for (int i = 0; i < count; i++)
            {
                list.Add("");
            }
        }

        public String this[int index]
        {
            get { return list[index]; }
            set
            {
                if(index >= 0 && index <= list.Count)
                list[index] = value;
            }
        }

        public override string ToString()
        {
            return string.Join(", ", list);
        }
    }
}