Is Scala frontend or backend?
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Likewise, is Scala Worth Learning 2020?
It is totally worth to learn. Below are the reasons. Scala supports both functional and OOPs concept. So many framework written in scala like Akka, Play, Lift, Spark etc.
One may also ask, does Amazon use Scala? On Dice.com, Amazon has several job postings for people with "languages such as C, C++, Java, Scala, or Perl" (Software Development Engineer, Cloud Drive + Kindle Fire; Software Development Engineer; Software Development Manager, Amazon Web Services).
Also to know, is Scala still relevant?
Yes Scala is widely used. Lots of people went to Scala because of Data tooling such as Spark but these days these people adopt Python. Scala/Java compatibility is very much like C++/C one. You can use seamlessly any Java library but they are very different languages.
Why Scala is faster than Java?
Scala and Java, both runs on JVM and their code complied into byte codes. But Scala supports Tail Call Recursion (an optimisation technique), this technique helps the Scala code to compiler faster than java code. Conclusion- Scala is 20% faster than java and many Java Developers like coding in Scala, as it is fast.