There are built-in functions for this:
List(1,2,3,4).forall(x => x < 5)
res0: Boolean = true
for any:
List(1,2,3,4).exists(x => x > 3)
res1: Boolean = true
There are built-in functions for this:
List(1,2,3,4).forall(x => x < 5)
res0: Boolean = true
for any:
List(1,2,3,4).exists(x => x > 3)
res1: Boolean = true