O’zbekiston respublikasi oliy va o’rta maxsus ta’lim vazirligi farg’ona davlat universiteti kurs ishi mavzu: C# dasturlash tilida dasturlashda lambda-ifodadan foydalanish bajardi

using System;

namespace Lambda_ifodalar
{
    delegate int IntOP (int end);
    class Lambda
    {
        static void Main(string[] args)
        {
            IntOP fakt =( int n )=> {
            int r = 1;
            for(int i=1; i <= n; i++)
            r = i * r;
            return r;
            };
            Console.WriteLine("Sonni kiriting: ");
            int a=int.Parse(Console.ReadLine());
            Console.WriteLine(a+"!="+fakt(a));
            Console.WriteLine();
            Console.ReadKey(true);
        }
    }
}

Ushbu kodni bajarishda quyidagi natija olinadi.

Yuqoridagi misolda, r o'zgaruvchisi blokli lambda-ifoda tanasida e'lon qilinganiga e'tibor bering, for sikli tashkil qilingan va return operatori ishlatiladi. Ushbu elementlarning barchasini blokli lambda ifodasida qo’llash qulay va bu borada, bu anonim usulga juda o'xshash. Shuning uchun, eski kodni yangilashda ko'plab anonim usullarni blokli lambda ifodasiga aylantirish mumkin.

blokli lambda ifodasini ko'rsatadigan yana bir misolni ko'rib chiqing.

using System;
namespace Lambda
{
    delegate string StrMod(string s);
    class UseStatementLambdas
    {
        static void Main() 
        {
            //Bo'shliqlarni defis bilan almashtirish.
            StrMod ReplaceSpaces = s => {
            Console.WriteLine("Bo'shliqlarni defis bilan almashtirish.");
            return s.Replace(' ',  '-');
            };
            //  Bo'shliqlarni olib tashlash.
            StrMod RemoveSpaces = s => {
            string temp ="";
            int i;
            Console.WriteLine("Bo'shliqlarni o'chirish.");
            for(i=0; i < s.Length; i++)
            if (s[i]  != ' ')  temp += s[i];
            return temp;
            };
            // Satrni teskari tartibda yozish
            StrMod Reverse = s => {
            string temp = "";
            int i, j;
            Console.WriteLine("Satrni teskari tartibda yozish:");
            for(j=0, i=s.Length-1; i >= 0; i--, j++)
            temp += s [i];
            return temp;
            };
            string str;
            // Delegatlardan foydalanib lambda iboralariga kiring.
            StrMod strOp = ReplaceSpaces;
            str = strOp("Farg'ona davlat universiteti.");
            Console.WriteLine("Natija satri: " + str);
            Console.WriteLine();
            strOp = RemoveSpaces;
            str = strOp("Farg'ona davlat universiteti.");
            Console.WriteLine("Natija satri: " + str);
            Console.WriteLine();
            strOp = Reverse;
            str = strOp("Farg'ona davlat universiteti.");
            Console.WriteLine("Natija satri: " + str);
            Console.ReadKey();
        }
    }
}

Dastur natijasi: