Is there an equivalent of “None()” in LINQ?

Question

I\'ve been running into situations where I feel I\'m lacking a LINQ extension method which effectivelly checks if there is no match of the specified predicate in a collection. T

Answer 1

None is the same as !Any, so you could define your own extension method as follows:

public static class EnumerableExtensions
{
    public static bool None(this IEnumerable source,
                                     Func predicate)
    {
        return !source.Any(predicate);
    }
}