Question

I have a method like this:

public List<Fruit> Traverse (IEnumerable<Fruit> collection, Action<Fruit> action)

I can do this:

Traverse (array, f => f.Text);

How can I call the action so I get the same element?

Traverse (array, f => f);

C# compiler doesn’t allow me to do this.

EDIT:

List<Fruit> result = ...
foreach (Fruit fruit in collection)
{
    result.Add(fruit);
    action(fruit);
}

The method signature is fixed so I can’t get anything else by just using an action, right? But what I need is to pass an action that does nothing so I get the whole result list.

Answer 1

Isn’t Action a delegate that returns nothing? How about:

Traverse(array, e => {});