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Func and Action C # reps used by companies?

I'm really wondering if Func and Action delegates are being used by developing companies. And do they use it for events? I know this is a strange question, but I have already asked my teacher and many other people, but no one could give me an answer.

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In C #, Action

and Func

are extremely useful tools for reducing code duplication and communication. And reducing duplication and making code reusable is important for any company.

It's a shame that many developers shy away from them because they don't understand them.



Adding Action and Func to your toolbox is a very important step in improving your C # code.

As a great use case: Linq

based on Action

and Func

andPredicate

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Here's an example of the power of these constructs, which illustrates for me the emptiness of the "junior developers who may not understand" argument.

If you have a class Organisation

that contains a collection of objects Department

, and if a class Department

contains a collection of objects Employee

, how do you get a complete set of employees for the organization

You can loop through objects and create a collection:

var allEmployees = new List<Employee>();
foreach (var department in organisation.Departments)
{
    foreach (var employee in department.Employees)
    {
        allEmployees.Add(employee);
    }
}


or you can just use the single operator

var allEmployees = organisation.Departments.SelectMany(d => d.Employees).ToArray();

This code is a term and less susceptible to human error than a manual loop, and immutability of the resulting array is less error prone than a modified list. To get these benefits, you need to be comfortable using lambda to represent constructs Func

and Action

.

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