TakeWhile, but get the element that stopped it also

Question

I\'d like to use the LINQ TakeWhile function on LINQ to Objects. However, I also need to know the first element that \"broke\" the function, i.e. the first elem

Answer 1

I think you can use SkipWhile, and then take the first element.

var elementThatBrokeIt = data.SkipWhile(x => x.SomeThing).Take(1);

UPDATE

If you want a single extension method, you can use the following:

public static IEnumerable MagicTakeWhile(this IEnumerable data, Func predicate) {
    foreach (var item in data) {
        yield return item;
        if (!predicate(item))
            break;
    }
}