k1
, k2
, and k3
.Return null
if no such a value.
# Return the value associated to the keys `k1`, `k2`, and `k3`.
# Return `null` if no such a value.
fun [](k1: K1, k2: K2, k3: K3): nullable V
do
var level1 = self.level1
var level2 = level1.get_or_null(k1)
if level2 == null then return null
return level2[k2, k3]
end
lib/more_collections/more_collections.nit:205,2--213,4