Why do indices start at 0?

because the first item is retrieved by moving forward by 0.

Vietnam and computer science

here

question on delegate predicates

in the following class:

class testLinq

    {

       

        public  bool www(string s)

        { return s.Equals("def"); }

        public delegate bool d(string s);

        public void write()

        {

           

            List<String> l = new List<string>() { "abc", "def" };

             

            normal way of doing predicate:  

            Console.WriteLine(l.Find(p => { return p.Equals("def"); }));

            

            bizzare method: 

            Predicate<string> pred = new Predicate<string>(www); 

            Console.WriteLine(l.Find(pred));

            non working method - 

            d di = null;

            di  = www;

            Console.WriteLine(l.Find(di)));

         Why?

            

            Console.ReadLine();

        }

    }

Basic Web Vulnerabilities

are broken in to 3 types

• Injection 
• sql injection
• LDAP Injection
• The server trusting requests
• HTP response splitting
• server side includes
• cross site request forgery CSRF
• the client trusting responses
• cross site scripting XSS

words that c# compiler add to LINQ

for example:
in this case

SortedList<int, string> sl = new SortedList<int, string>() { { 4, "beatrice" }, { 2, "herby" } };

this 

Console.WriteLine(sl.FirstOrDefault((KeyValuePair<int, string> p) => {return p.Key == 4; }).Value);

is equivelant to this:

Console.WriteLine(sl.FirstOrDefault(p => p.Key == 4).Value);

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