@uncheckedVariance can be used to bridge the gap between Scala\'s declaration site variance annotations and Java\'s invariant generics.
I have seen this usage of Function.tupled example in another answer: Map(1 -> \"one\", 2 -> \"two\") map Function.tupled(_ -> _.length).
Consider the following code : // My code class Person(var age: Int) // Client\'s code object Main { def main(args: Array[String]) {
I just stumbled on one of Tony Morris\' blog-posts about Java and a fundamental problem with the language: that of defining a bespoke equality-relation for a collection. This is something that I think
trait NotNull {} I\'ve been trying to see how this trai开发者_如何学编程t can guarantee that something is not null and I can\'t figure it out:
I am very new to Scala. I want to implement a generic matrix class \"class Matrix[T]\". The only constraint on T should be that T should implement a \"+\" and a \"*\" mothod/function. How do I go abo
How does one go a开发者_运维技巧bout implementing a subtype of Numeric[T]? I have been looking for at guide on this but haven\'t found any.
I was trying to write a testing/timing function for answers provided in this SO question. Some answers work on Array[T], some on List[T], one on Iterable[T] and one on String!
This is a follow-up now that Scala 2.8.0 be开发者_运维知识库ta is out to this question: What is a proper way to manage flexible, typed, immutable data structures in Scala?
Assume you have a List(1,\"1\") it is typed List[Any], which is of course correct and expected. Now if I map the list like this
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