Is yield useful outside of LINQ?

Question

When ever I think I can use the yield keyword, I take a step back and look at how it will impact my project. I always end up returning a collection instead of yeilding becau

Answer 1

I've used yeild in non-linq code things like this (assuming functions do not live in same class):

public IEnumerable GetData()
{
    foreach(String name in _someInternalDataCollection)
    {
        yield return name;
    }
}

...

public void DoSomething()
{
    foreach(String value in GetData())
    {
        //... Do something with value that doesn't modify _someInternalDataCollection
    }
}

You have to be careful not to inadvertently modify the collection that your GetData() function is iterating over though, or it will throw an exception.