I\'m trying to implement a default valued map, and I\'d like filters, maps, etc. over a DefaultingMap to also produce a DefaultingMap whenever possible. Here\'s my initial implementation:
How do you use Map.foldLeft?According to the docs it looks like foldLeft [B] (z: B)(op: (B, (A, B)) ⇒ B) : B
What is the be开发者_StackOverflow中文版st way of handling exceptions while iterating over a loop in Scala?
I have reached this far: implicit def collecti开发者_StackOverflow中文版onExtras[A](xs: Iterable[A]) = new {
I found a blog post today that mention\'s scalaz\'s sequence function. Couldn\'t you do something as simple as:
How can I use a for-comprehension that returns something I can assign to an ordered Map? This is a simplification of the code I have:
In Java, I use LinkedHashMap for this purpose. The documentation of Java\'s LinkedHashMap is very clear that it has \"predictable iteration order\" and I need th开发者_JS百科e same in Scala.
why the methods transform (in-place mutation version of map) and retain (in-place mutation version of filter) are defined on only开发者_C百科 mutable.Map but not on mutable.Buffer and mutable.Set? sho
How I can iterate over Scala collections in Jav开发者_JS百科a?Some example Scala class AThing { @scala.reflect.BeanProperty val aList = List(1,2,3,4,99)
What is the most succinct Scala way to reverse a Map? The Map may contain non-unique values. EDIT: The reversal ofMap[A, B] should give Map[B, Set[A]] (or 开发者_开发问答a MultiMap, that would be ev
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