I've been learning Scala and after being initially excited by Scala's _ notation, I'm disappointed by how often I end up resorting to the long form for expressions that feel simple.
Also, I think Clojure's syntax for the 1st argument, 2nd argument, etc. is more intuitive. I mean, the second _ doesn't refer to the same argument as the first _? That violates all my instincts as a programmer. I was completely baffled by it until it was explained to me, and it still seems very clunky, because it forces me to declare names for arguments more often than I would like to. In my opinion, the Clojure way is immediately obvious and more concise (because it can be used in many cases where Scala requires named arguments.) It's just better all around, for any expression more complicated than { _ + _ }.
Also, I think Clojure's syntax for the 1st argument, 2nd argument, etc. is more intuitive. I mean, the second _ doesn't refer to the same argument as the first _? That violates all my instincts as a programmer. I was completely baffled by it until it was explained to me, and it still seems very clunky, because it forces me to declare names for arguments more often than I would like to. In my opinion, the Clojure way is immediately obvious and more concise (because it can be used in many cases where Scala requires named arguments.) It's just better all around, for any expression more complicated than { _ + _ }.