a) The arrays uses regular generics, while in other language, generics are bolted on as an afterthought and are completely separate but have overlapping behaviours with arrays.
b) Scala has immutable “val” as a first class language feature. The “val” of scala is similar to Java final variables. Contents may mutate but top reference is immutable.
c) Scala lets ‘if blocks’, ‘for-yield loops’, and ‘code’ in braces to return a value. It is more preferable, and eliminates the need for a separate ternary operator.
d) Singleton has singleton objects rather than C++/Java/ C# classic static. It is a cleaner solution
e) Persistent immutable collections are the default and built into the standard library.
f) It has native tuples and a concise code
g) It has no boiler plate code