What does "()=>" mean?

[RobR]

Greetings!

A source code file for a .Net 3.5 application contains the following code in the beginning of an array definition:

A C# source code file I am hoping to use in a project of my own has an array definition that begins with the following code:

stf.ParseBlock(new STFReader.TokenProcessor[] {
new STFReader.TokenProcessor("eventtypelocation", ()=>{ stf.SkipBlock(); }),

What does the "()=>" mean? I've never seen that construct before.

Thanks very much!

RobR

[RobR]

I found it. => means "goes to" in a lambda expression. I am embarrassed that I didn't look in the C# help file before I posted here. My apologies for wasting bandwidth.

[Chris_F]

It's C#'s version of lambda functions, also called closures or anonymous functions.

delegate int myDelegate(int number);
delegate int myDelegate2(int number1, int number2);

myDelegate del = i => i + 1;
myDelegate2 del2 = (i, j) => i + j;

int a = del(42); // returns 43
int b = del2(42, 5); // returns 47

List<string> myStrings = new List<string>();
// Add Strings
myStrings.ForEach( i => Console.WriteLine(i) );

[ClassCoder]

see this link to understand lamda expressions .. it's a part from linq to working with data in fast and easy way

[BigEd781]

see this link to understand lamda expressions .. it's a part from linq to working with data in fast and easy way

Lambda expressions existed in .NET before LINQ did, though they are used heavily when using LINQ.