Question

If I want an empty enumeration, I can call Enumerable.Empty<T>(). But what if I want to convert a scalar type to an enumeration?

Normally I’d write new List<string> {myString} to pass myString to a function that accepts IEnumerable<string>. Is there a more LINQ-y way?

Answer 1

You can use Repeat:

var justOne = Enumerable.Repeat(value, 1);

Or just an array of course:

var singleElementArray = new[] { value };

The array version is mutable of course, whereas Enumerable.Repeat isn’t.