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c# lambdas

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TheCodeTrooper answered on October 3, 2020 Popularity 10/10 Helpfulness 3/10

answer c# lambdas

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c# lambdas

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//Lambdas are just short handed anonymous method or functions usally 
//for use in passing to other methods or functions to call such as a sort.
//Example:
//The Lambda used here after the =s
Action ExampleContainerForDelagate = ()=>
	{/*Do something such as this example*/
    	Console.WriteLine("Hello world");
	};
//has been shorted from this anonymous delegate or method.
Action ExampleContainerForDelagate = delegate () { Console.WriteLine("Hello world"); };
//And this full (named) method signature method passing
Action ExampleContainerForDelagate = ExampleMethod;
void ExampleMethod()
{ Console.WriteLine("Hello world"); }
//usage example
List<int> ExampleList = new List(){1,3,0};
ExampleList.Sort((x,y)=>{return x - y; });
//The Sort will sort based on the return values from the Lambda passed.
//a negative will be seen as a smaller than the next number
//a 0 will be seen as equal
//and a positive will be seen as bigger than the next number
//by switching x and y postion in the 'return x - y;' you will effectively 
//change the sort to descending order. This is there for useful for sorting 
//based on needs or where it is not obvious how to sort.

Popularity 10/10 Helpfulness 3/10 Language csharp

Source: Grepper

Tags: c#

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Contributed on Oct 03 2020

TheCodeTrooper

0 Answers Avg Quality 2/10

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C# program lambda Func

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using System;

class Program
{
    static void Main()
    {
        // Part 1: use implicitly-typed lambda expression.
        // ... Assign it to a Func instance.
        Func<int, int> func1 = x => x + 1;
        Console.WriteLine("FUNC1: {0}", func1.Invoke(200));
        
        // Part 2: use lambda expression with statement body.
        Func<int, int> func2 = x => { return x + 1; };
        Console.WriteLine("FUNC2: {0}", func2.Invoke(200));
        
        // Part 3: use formal parameters with expression body.
        Func<int, int> func3 = (int x) => x + 1;
        Console.WriteLine("FUNC3: {0}", func3.Invoke(200));
        
        // Part 4: use parameters with a statement body.
        Func<int, int> func4 = (int x) => { return x + 1; };
        Console.WriteLine("FUNC4: {0}", func4.Invoke(200));
    }
}

Popularity 10/10 Helpfulness 3/10 Language csharp

Source: www.dotnetperls.com

Tags: c# c

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Contributed on Feb 09 2022

PrashantUnity

0 Answers Avg Quality 2/10

c# lambda expression examples

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(int num) => num * 5;

Popularity 9/10 Helpfulness 1/10 Language csharp

Source: www.programiz.com

Tags: c# expression expressio

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Contributed on Jun 06 2024

Bartek di Castri

0 Answers Avg Quality 2/10

c# lambdas

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