How Could I count array's elements when they are greater than zero in Cypher?

Question

With [12,-9,30,-5,4]

as a resault I would 3, how could I do?

user_4187346 · Answer

something like this...

WITH [12,-9,30,-5,4] AS coll
RETURN filter(x IN coll WHERE x > 0) AS pos

and if you wanted the actual number of positive numbers

WITH [12,-9,30,-5,4] AS coll
RETURN size(filter(x IN coll WHERE x > 0)) AS pos

and as @christophewillemsen says

WITH [12,-9,30,-5,4] AS coll
RETURN size([x IN coll WHERE x > 0]) AS pos

user_10623578 · Answer

Thank you I did in this way and the result is correct:

 WITH [12,-9,30,-5,4] AS coll
 RETURN size(filter(x IN coll WHERE x > 0)) AS pos