Anonymous methods

  • Thread starter Thread starter puzzlecracker
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puzzlecracker

Can you make an Anonymous methods receive and return values?
Otherwise, they appear useful for void methods?

Thanks
 
Can you make an Anonymous methods receive and return values?
Otherwise, they appear useful for void methods?

Thanks
Click to expand...

of course an anonymous method can return a value:
delegate int DoIt();
DoIt d = delegate{ return 2;};
DoIt d1 = () => 12; //now using a lambda expression
int qpp;
qpp = d();
 
Yes:

Predicate<int> isEven = delegate(int i)
{ return i % 2 == 0; }; // C# 2.0
Predicate<int> isEven = i => i % 2 == 0; // C# 3.0

Console.WriteLine(isEven(4));
Console.WriteLine(isEven(5));

Marc
 
Yes:

         Predicate<int> isEven = delegate(int i)
            { return i % 2 == 0; }; // C# 2.0
         Predicate<int> isEven = i => i % 2 == 0; // C#3.0

         Console.WriteLine(isEven(4));
         Console.WriteLine(isEven(5));

Marc
Click to expand...


What's Predicate<int>, not familiar with Predicate class.

Thanks
 
What's Predicate<int>, not familiar with Predicate class.

Thanks
Click to expand...

It's a predefined delegate. It is defined as :
public delegate bool Predicate<T>

very used in List operations like Find, FindFirst, etc
 
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