My biggest problem with Scala, to date, is all the optional syntax. On one hand, making things optional sounds nice, and it can be handy... but in Scala, you can have a line of code where there are 3 or 4 different ways to write it. Sorry, don't have a good example handy, I'd have to go through my "learning Scala" workspace to dig something up and I don't have that stuff nearby. Anyway, the point is, I sometimes feel like Scala can easily lead to a situation where one is writing "write only" code. I do not relish the idea of taking a large base of Scala code, written by somebody else, and trying to understand it well enough to work on it.
My biggest problem with Scala, to date, is all the optional syntax. On one hand, making things optional sounds nice, and it can be handy... but in Scala, you can have a line of code where there are 3 or 4 different ways to write it. Sorry, don't have a good example handy, I'd have to go through my "learning Scala" workspace to dig something up and I don't have that stuff nearby. Anyway, the point is, I sometimes feel like Scala can easily lead to a situation where one is writing "write only" code. I do not relish the idea of taking a large base of Scala code, written by somebody else, and trying to understand it well enough to work on it.