How do you define the Lambdas operator? =>

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Hello. What exactly is the lambdas operator, and how should I define it in my head? For example:

x = y; //x is the same number as y.

if (x != y) //if x and y are different numbers do this, this, and this.
{
//this, this, and this
}
//How should I read this?
if (currentRoom.roomEnemies.Count(roomEnemies => roomEnemies != null) == 0)
{
Console.WriteLine("There are no enemies in here.");
}

Some more examples would be great. Thank you in advance.

Posted 12-Jul-13 4:55am

A Fellow Coder

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[no name] 12-Jul-13 10:57am

http://msdn.microsoft.com/en-us/library/vstudio/bb311046.aspx

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OriginalGriff · Answer 1 · 2013-07-12T05:39:00

All a lambda is, is a method that has been "stretched out".

C#

x => x + 1;

Is the equivalent of writing

C#

private int MyMethod(int x)
   {
   return x + 1;
   }

There is a lot more to them than that when you come to using them (the whole of Linq depends on them for example) but for proper details, see MSDN: Lambda Expressions (C# Programming Guide)[^]