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C# Querying With LINQ Functional Programming in C# Actions and Funcs

Posted by Rajesh Thakur
Rajesh Thakur
1,687 Points

Need correct answer

Course

Querying With LINQ 253-minute C# Course

Actions and Func Objectives

Challenge Task 1 of 3

In the Program class, declare a public Func field named Square that takes an int and returns an int. Use an anonymous method to assign a delegate that takes an int parameter named number and returns the result of number * number.

My attempt #1:

using System;

namespace Treehouse.CodeChallenges { public class Program { public Func<int,int> Square = delegate(int number) { return number * number; }; } }

When checking work:

Bummer! Did you declare a Func that takes an 'int' and returns an 'int'?

My attempt #2:

using System;

namespace Treehouse.CodeChallenges { public class Program { Func<int,int> Square = delegate(int number) { return number * number; }; } }

Bummer! Did you declare a 'public Func'?

Program.cs 
using System;

namespace Treehouse.CodeChallenges
{
    public class Program
    {
        Func<int,int> Square = delegate(int number)
        {
            return number * number;
        };
    }
}

2 Answers

Dave Harker
PLUS
Dave Harker
Courses Plus Student 15,510 Points
Dave Harker
Dave Harker
Courses Plus Student 15,510 Points

Hi Rajesh Thakur,

I think your first attempt was the closest :)
The challenge engine it seems is really fussy on this one ... I used your code ... and the check work return information

Bummer! Did you declare a 'public Func'?

// make it public and for syntactic craziness separate your argument and return type
// i.e. public Func<int, int> 
Func<int,int> Square = delegate(int number) 
    {
        return number * number;
    };

Nice work (crazy checking requirement aside) :dizzy:
Dave