Simple anonymous delegate II - Predicate

Follow from the previous post, anonymous delegate can be used as predicate, which is a method that defines a set of criteria and determines whether the specified object meets those criteria. For example we have the following method:

public static void DoSomething<TObj>(IEnumerable<TObj> objs, Action<TObj> action, Predicate<TObj> pred) { foreach (TObj obj in objs) if(pred(obj)) action(obj); }

which takes a predicate parameter and only perform the action if the predicates is true.

We can pass in anonymous delegate for the predicate:

List<string> listOfStrings = new List<string>(); listOfStrings.Add("one"); listOfStrings.Add("two"); listOfStrings.Add("three"); AnonymousDelegate.DoSomething<string>(listOfStrings, delegate(string s) { Response.Write(s + "<br/>");}, delegate(string s) { return !s.StartsWith("o"); });

In this case on "two" and "three" would be written out.