It seems we have different definitions of what type inference, higher order functions and Turing completeness means. :-) Regarding coroutines in Java: I don't know if libraries using native continuation mechanisms or bytecode manipulations prove that Java (the language) has continuation support. :-) I don't have anything against Scala. In my very first message I even said that I see the odds for Scala winning higher than the odds for Clojure winning - because I already see some enterprise adoption of Scala. Although I see the probability of Scala winning quite low. As you noticed with Java 8 Java is already borrowing a lot of useful things from Scala. I am sure conservative corporate decision makers will see less and less reasons to switch to Scala as time passes by. Also I don't think that Java sucks. I was just making a point from personal productivity experience. Your experience might differ from that.
If I have a function:
def upcase(s: String): String...
The compiler with its static type system can tell me if e. g. I am trying to call the upcase function with an Int argument. But in my experience something like that just does not happen very often. Most programmers are not so stupid that they try to fit a square peg in a round hole. ;-)
A unit test can check if the returned string is really the upcase version of the input parameter. Plus if the programmer would really assume that he could upcase an Int it would just as well give the feedback that his assumption was wrong-like the compiler.
If I have a function: def upcase(s: String): String... The compiler with its static type system can tell me if e. g. I am trying to call the upcase function with an Int argument. But in my experience something like that just does not happen very often. Most programmers are not so stupid that they try to fit a square peg in a round hole. ;-)
A unit test can check if the returned string is really the upcase version of the input parameter. Plus if the programmer would really assume that he could upcase an Int it would just as well give the feedback that his assumption was wrong-like the compiler.