sujithjay
/ Combinatorial.scala
Created
March 19, 2018 14:40
— forked from vkostyukov/Combinatorial.scala
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| /** | |
| * A tiny class that extends a list with four combinatorial operations: | |
| * ''combinations'', ''subsets'', ''permutations'', ''variations''. | |
| * | |
| * You can find all the ideas behind this code at blog-post: | |
| * | |
| * http://vkostyukov.ru/posts/combinatorial-algorithms-in-scala/ | |
| * | |
| * How to use this class. | |
| * |
sujithjay
/ ASeq.scala
Last active
March 13, 2018 11:52
— forked from Mortimerp9/gist:5649109
"Cheap" implementation of an immutable.IndexedSeq backed by an Array. The output of ASeq looks like an Array according to the types, but is not mutable nor cast back to a mutable Array.
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| import scala.reflect.ClassTag | |
| import scala.collection.mutable.WrappedArray | |
| import scala.collection.mutable.ArrayLike | |
| def ASeq[T](elt: T*)(implicit ct: ClassTag[T]): IndexedSeq[T] = { | |
| val a = elt.toArray.clone | |
| a.deep.asInstanceOf[IndexedSeq[T]] | |
| } | |
| val a = Array(1,2,3) //> a : Array[Int] = Array(1, 2, 3) |