LINQ None method (aka !Any)

[maxkoshevoi]

I'm sure, this question was already raised here, but I couldn't find it.
What do you think about adding None method to LINQ to complement Any?

Main reason is that I see good amount of code that checks for empty collections like this. Which is not very readable.

if (!someLongCollectionName.Any())

As for other benefits. Third condition reads much better:

!arr.Any(i => i == 5)
arr.All(i => i != 5)
arr.None(i => i == 5)

[stephentoub]

#27661

[JansthcirlU]

I can see why you're hesitant to add Some and OnlySome, but None seems like a very natural addition to me.

[TonyValenti]

Im a big fan of .None. I already have that extension method in my standard library. Would love to see it become core.