usually easy interoperability with existing Java libraries
What’s everyone’s favorite, most fundamental, #Scala feature that’s also notable when compared to other programming languages?
Case classes? Pattern matching? Implicit Parameters/Conversions? By-name parameters? What else?
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Partial functions (one of many features)
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Controversial, but I agree - mostly because of the way it allows inline pattern matching: http://xs.map { case Some(i) => i; case None => 0}. Not so much because it allows unsafe code.
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for me, case classes for sure
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Pattern matching + sealed types (ADTs).
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Definitely this one for me.
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Nested scopes? (i.e., being able to define new types and import stuffs at arbitrarily nested scopes.)
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It's easy to forget how handy this one is until you have to go without it
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inferred strong, static types without Java's typing tax
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Macros
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