static void Main()
{
Person mitko = new Person("Genadi", 23);
Person pesho = new Person("Haralampi");
Console.WriteLine(mitko);
Console.WriteLine(pesho);
}
public static void Main(string[] args)
{
Person[] personArray = new Person[] {
new Person{Name="Sravan",Age=23,City="hyderabad"},
new Person{Name="Sampath",Age=47,City="Warangal"},
new Person{Name="Rama", Age=44,City="Warangal"},
new Person{Name="Anusha",Age=25,City="Warangal"}
};
var data = from person in personArray
select new { personName = person.Name, personAge = person.Age, personCity=person.City};
foreach (var i in data) {
Console.WriteLine (i);
}
}
static void Main(string[] args)
{
rand = new Random();
List<Person> persons = new List<Person>();
const int personCount = 100000;
// start computing elapsed time
Stopwatch watch = new Stopwatch();
watch.Start();
// add persons to list
for (int i = 0; i < personCount; i++)
{
Person p = new Person(RandomString(12), RandomString(4), RandomString(8), rand.Next(1, 100), rand.Next(30, 140), rand.Next(100, 220));
persons.Add(p);
}
watch.Stop();
Console.WriteLine("Adding persons took " + watch.ElapsedMilliseconds + "ms");
watch.Restart();
for (int i = 0; i < 1000; i++)
{
string nameToFind = RandomString(4);
Person p = persons.Find(x => x.FirstName == nameToFind);
if (p != null)
{
//Console.WriteLine("Found person with firstname " + nameToFind + " : " + p.FirstName + " " + p.LastName);
}
}
watch.Stop();
Console.WriteLine("Finding persons took " + watch.ElapsedMilliseconds + "ms");
Dictionary<string, Person> persons2 = new Dictionary<string, Person>();
watch.Restart();
for (int i = 0; i < personCount; i++)
{
do
{
Person p = new Person(RandomString(12), RandomString(4), RandomString(8), rand.Next(1, 100), rand.Next(30, 140), rand.Next(100, 220));
if (!persons2.ContainsKey(p.FirstName))
{
persons2.Add(p.FirstName, p);
break;
}
} while (true);
}
watch.Stop();
Console.WriteLine("Adding persons to dictionary took " + watch.ElapsedMilliseconds + "ms");
// find 1000000 names from the dictionary
watch.Restart();
for (int i = 0; i < 1000000; i++)
{
string nameToFind = RandomString(4);
Person p = null;
persons2.TryGetValue(nameToFind, out p);
if (p != null)
{
//Console.WriteLine("Found person with firstname " + nameToFind + " : " + p.FirstName + " " + p.LastName);
}
}
watch.Stop();
Console.WriteLine("Finding persons from dictionary took " + watch.ElapsedMilliseconds + "ms");
Console.ReadLine();
}
