Are there any official ways to write an Immediately Invoked Function Expression?

Question

Something like this:

var myObject = new MyClass()
{
    x = \" \".Select(y =>
    {
        //Do stuff..
        if (2 + 2 == 5)
            return \"I like c         


        

Answer 1

Maybe not quite answering the question but ... one reason I wanted IIFE in C# was to give better meaning to a function being called on an object. In this example I wanted to give meaning as to what the 'Click' method does in a particular context within test code (and I do not like comments).

Before ...

lastLine.Click(); //click to begin editing line

After ...

Action clickToStartEditing = line => line.Click();
clickToStartEditing(lastLine);

Later I discovered I could simply create a new method with another name ...

Action clickToStartEditing = lastLine.Click;
clickToStartEditing(lastLine);

Finally simply naming the variable in a better way can better solve the issue (for me)

lastLineForEditing.Click();

This solved an IIFE issue for me, to give meaning to the method name.