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- Dictionaryac·tion/ˈakSHən/
noun
- 1. the fact or process of doing something, typically to achieve an aim: "he vowed to take tougher action against persistent offenders" Similar
- 2. a thing done; an act: "she frequently questioned his actions" Similar
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Also there are useful generic delegates which considers a return value: Converter<TInput, TOutput> (MSDN) Predicate<TInput> - always return bool (MSDN) Method: public MyType SimpleUsing.DoUsing<MyType>(Func<TInput, MyType> myTypeFactory) Generic delegate: Func<InputArgumentType, MyType> createInstance = db => return new MyType();
May 14, 2010 · 45. Action is a standard delegate that has one to 4 parameters (16 in .NET 4) and doesn't return value. It's used to represent an action. Action<String> print = (x) => Console.WriteLine(x); List<String> names = new List<String> { "pierre", "paul", "jacques" }; names.ForEach(print); There are other predefined delegates :
Jul 14, 2014 · There are basically two different types for these: Func and Action. Funcs return values but Actions don't. The last type parameter of a Func is the return type; all the others are the parameter types. There are similar types with different names, but the syntax for declaring them inline is the same.
May 30, 2017 · If you know what parameter you want to pass, take a Action<T> for the type. Example: void LoopMethod (Action<int> code, int count) { for (int i = 0; i < count; i++) { code(i); } }
Dec 17, 2013 · I want to write a method that performs an action on a Result object and return it. Normally through synchronous methods it would be. public T DoSomethingAsync<T>(Action<T> resultBody) where T : Result, new() { T result = new T(); resultBody(result); return result; }
Jan 28, 2015 · By convention, use object. Below on same page we find an example of the typical event definition which is something like. public event EventHandler<EventArgs> EventName; Had we defined. class MyClass. {. public event Action<MyClass, EventArgs> EventName; } the handler could have been.
Jul 7, 2012 · An 'Action' delegate in real world would be 'Run' or 'Walk'. You don't care at what speed you move, what route you take or report the time it took to move. A non-Action delegate could for example define at what speed you run and return the time it took to complete it. public delegate void MoveAction(); public delegate int MoveDelegate(int speed);
Dec 1, 2018 · 3. In React, which one of the following ways is the best way to define action types? First way: Defining actions using strings like the following: const actionCreatorExample = (value) => { return { type: 'SET_RESPONSE', value }; } Second way: Defining action types in an object and referring to action types by accessing the values of that object.
Feb 18, 2016 · Nice setup, I will follow your example. However for the action type constant I would rather use something like this: const AccountActions = {GET_CURRENT_ACCOUNT_ASYNC: "GET_CURRENT_ACCOUNT_ASYNC"}.
Well, Action<T> is generic, meaning that various kinds of Action<T> can take parameters of different types. For example, an Action<string> can accept a string parameter. Console.WriteLine(message); Or as a Lambda: When a method accepts an action as an argument, is is typically going to be used as a callback.
