Predicate<int> pre = delegate(int a){ a %2 == 0 };

class Person {
    public string Name { get; set; }
    public int Age { get; set; }
}

Person oscar = null;
foreach (Person person in people) {
    if (person.Name == "Oscar") {
        oscar = person;
        break;
    }
}

if (oscar != null) {
    // Oscar exists!
}

Predicate<Person> oscarFinder = (Person p) => { return p.Name == "Oscar"; };
Predicate<Person> ruthFinder = (Person p) => { return p.Name == "Ruth"; };
Predicate<Person> seventeenYearOldFinder = (Person p) => { return p.Age == 17; };

Person oscar = people.Find(oscarFinder);
Person ruth = people.Find(ruthFinder);
Person seventeenYearOld = people.Find(seventeenYearOldFinder);

Predicate<int> pre = delegate(int a){ return a % 2 == 0; };

pre(1) == false;
pre(2) == true;

int firstEven = ints.Find(pre);

int firstEven = ints.Find(evenFinder);

int[] intArray = { 1, 3, 4, 5, 67, 8, 899, 56, 12, 33 };

   Predicate<int> func = delegate(int val) { return val % 2 == 0; };

   Array.FindAll<int>(intArray, func);