aws lambda event

Learn how to create AWS LAMBDA functions This execute on a scheduled interval and much like a cron job would. In this lesson we'll create a LAMBDA function that checks for a string of text on a website to verify the website are up and operational. The lambda function logs to CloudWatch Metrics and sends a notification

9. Delegate, event, Lambda, and delegate event lambda There must be a problem with delegation.The first question is what is delegated? Look at the description in. net: On the. net platform, the delegate type is used to define and callback in the corresponding application. (Callback? A technique used to process two phys

1 /*2 * Created by SharpDevelop. 3 * User: David Huang4 * Date: 2015/7/305 * Time: 16:326 */7 usingSystem;8 9 namespaceLambdaTen { One class Program A { - Public Static voidMain (string[] args) - { the //Anonymous Delegate -funcint,int> del0=Delegate(inti) - { - returni*2; + }; - + //evolved. Afuncint,int> del1= i=> at { - returni*2; - }; - -

Delegate, Lambda expression, and event series 06. Use Action to implement observer mode and experience the difference between delegate and event. lambdaaction In "two ways to implement the Observer Pattern", the Observer Pattern has been implemented through the interface, delegate, and event methods. This article uses

Delegate, Lambda expression, event series 03, from delegate to Lamda expression, lambdalamda In the article "delegate, Lambda expression, event series 02, and when to use delegate", the use of delegate makes the code much simpler. namespace ConsoleApplication2{ internal delegate bool MyCalculateDelegate(int val);

Delegate, Lambda expression, event series 05, Action delegate and closure, lambdaaction Here is an example of using the Action delegate: static void Main(string[] args) { int i = 0; Action a = () => i++; a(); a(); Console.WriteLine(i); } The result is expected 2. But the curious thing is: how is the variable I on the stack passed

Delegate, Lambda expression, event series 01, Delegate, basic delegate usage, delegate Method and Target attribute, lambdatarget A delegate is a class. namespace ConsoleApplication1{ internal delegate void MyDelegate(int val); class Program { static void Main(string[] args) { } }} Use Reflector to view the delegate IL code:○ Delegate is indeed a class○ Delegate constructor r

. Conclusion: each action has its own "closure", and "closure" does not affect each other. "Delegation, lambda expressions, and event series" include:Delegate, Lambda expression, event series 01, Delegate, basic delegate usage, delegate method and Target attribute delegate,

referee. public class WinTeam : Team { public WinTeam(string name) : base(name){} public void Celebrate() {Console. writeline ("We have been promoted, so happy! "); } } public class LoseTeam : Team { public LoseTeam(string name) : base(name){} public void WeAreSad() {Console. writeline ("the game is lost, so sad! "); } } The client registers the methods of the failed and victory teams to the action variable, and then tr

The delegation, events, and lambda expressions in C # often make me dizzy. Today I will briefly summarize the content from chapter 13 and 14 of C # Getting Started classic. Delegation is a typeYou can store references as function types.Is actually very simple. Define a delegate first, then declare a variable of the delegate type, and then initialize the variable as a reference to a function with the same return type and parameter list as the delegate.

, because the delegate parameter list and return type are consistent with the if statement. internal delegate bool MyCalculateDelegate(int val); class Program { static void Main(string[] args) { IEnumerable MyCalculateDelegate del = LessThanFive; var result = GetNumbers(source,del); foreach (int n in result) { Console.WriteLine(n); } } static IEnumerable { for

last method in the list is used as the return value for the entire delegate invocation. Method List creation: First instantiate a delegate, and then use the "+" or "+ =" operator to add a method to the list. When removing a method, you can use the "-" or "-=" operator.EventsEvents are built on the basis of a delegate, which is a signaling mechanism that automatically notifies when certain operations occur. An event is defined as a message sent by an

In writing a small program, encountered such a problem, need to use a delegate to hook up the event, but want to use the local variables in this event, and once the delegate has been defined, the hook will not be able to add additional formal parameters. Is there any way to achieve it The delegate is defined as follows: Copy Code code as follows: public class SOCKETSP { public delegate void Receiv

This article refer to sikic# Advanced article, reproduced please indicate the source.What is a delegateIf we want to pass the method as a parameter, we need to use the delegate. In a nutshell, a delegate is a type that can assign a reference to a method . Declaring delegates and usingThere are four ways of declaring a delegate. One is native, and the other three is C # for the convenience of encapsulation.The four types of declarations are delegate, Action, Func,Using a class in C # is divided

static method to the Delegate constructor as long as the parameter list and return type are the same.○ Delegate and instance methods: You can pass the instance method to the Delegate constructor as long as the parameter list and return type are the same.○ Delegated call: for example, D. invoke (10), called through the entrusted instance method invoke; like D (10), this is a "syntax sugar" method, which also calls the instance method invoke internally.○ Target attribute: indicates the name of th