Generic Delegates and Anonymous Methods

re: Generic Delegates and Anonymous Methods

Rajesh — Fri, 11 Dec 2009 06:40:28 GMT

public delegate T GenericDelegate<T>(T items );

public void main()

{

GenericTestClass obj = new GenericTestClass();

GenericDelegate<int> delFunction= new GenericDelegate<int>(obj.IntTestFunct);

Int intResult =delFunction(12);

GenericDelegate< string > delFunction= new GenericDelegate< string >(obj.strTestFunct);

string strResult =delFunction(“Hello”);

}

public GenericTestClass

{

public static int IntTestFunc(int count )

{

return count;

}

Public static string strTestFunc(string str)

{

return str;

}

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re: Generic Delegates and Anonymous Methods

Shahid Riaz Bhatti — Wed, 29 Oct 2008 04:06:56 GMT

@ Tomas Scheel

your solution is good, but the example which u gave later i.e. like this one "persons.Exists(p => p.FirstName == "Bob");" can not be implemented in .Net 2.0.

The original post is excellent post if you are working in .Net 2.0 environment, the reason is that I have seen many developers using loops instead of using delegates..

Tomas your example is good but only if some one is working in 3.5 environment, because lambdas expression are not supported in the earlier version..

but at the end I must say that I like this post, it was really helpfull.

Thanx for sharing

re: Generic Delegates and Anonymous Methods

Tomas Scheel — Thu, 27 Dec 2007 00:21:13 GMT

@ A Skeptic

This is a fairly simple example, but with .NET 3.5 it gets simpler... The last bit:

persons.ForEach(delegate(Person p)

{

Console.WriteLine(p);

});

Can be rewritten as

persons.ForEach(p => Console.WriteLine(p));

I think that is far easier on code maintainability. In addition, it looks a lot cleaner. I like small bits like what is above, but with everything else, only in moderation. Something like:

persons.ForEach(p =>

{

// 30 lines later....

});

Is generally a bad idea.

I especially like this for Find and Exists, for example:

persons.Exists(p => p.FirstName == "Bob");

re: Generic Delegates and Anonymous Methods

A Skeptic — Wed, 26 Dec 2007 17:00:25 GMT

Combining generics with delegates and then adding anonymous methods on top of it does a real number on the maintainability of the code. What do you think? I think this code is very hard to understand.

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