Why does Resharper suggest that I simplify "not any equal" to "all not equal"? [duplicate]

Question

I need to check whether an item doesn't exist in a list of items in C#, so I have this line:

if (!myList.Any(c => c.id == myID)))  

Resharper is suggesting that I should change that to:

if (myList.All(c => c.id != myID)))  

I can see that they are equivalent, but why is it suggesting the change? Is the first implementation slower for some reason?

Answer 1

The readability of the expression is to me a personal opinion.

I would read this

if (!myList.Any(c => c.id == myID)))  

as 'is my item not in the collection'. Where this

if (myList.All(c => c.id != myID)))  

reads as 'are all items in the collection different than my item'.

If the 'question' I want to ask -through my linq query- is 'is my item not in the list', then the first query better suits the question that I want to ask. The ! in front of the first query is not a problem.