a) One of the only languages you can write your entire app in Scala i.e. it supports compiling to Javascript, JVM and LLVM.
b) It has the only formally proven type system of any language.
c) It is the innovation language. Many of the concepts that are now standard in other languages had their implementation borrowed from Scala. And it is continuing to innovate with libraries like Gears (https://github.com/lampepfl/gears) which does async without colouring and compiler additions like resource capabilities.
a) One of the only languages you can write your entire app in Scala i.e. it supports compiling to Javascript, JVM and LLVM.
b) It has the only formally proven type system of any language.
c) It is the innovation language. Many of the concepts that are now standard in other languages had their implementation borrowed from Scala. And it is continuing to innovate with libraries like Gears (https://github.com/lampepfl/gears) which does async without colouring and compiler additions like resource capabilities.