diff options
Diffstat (limited to 'src/library/scala/collection/immutable/NumericRange.scala')
| -rw-r--r-- | src/library/scala/collection/immutable/NumericRange.scala | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/src/library/scala/collection/immutable/NumericRange.scala b/src/library/scala/collection/immutable/NumericRange.scala index 65bd9ab6f2..0966fa035f 100644 --- a/src/library/scala/collection/immutable/NumericRange.scala +++ b/src/library/scala/collection/immutable/NumericRange.scala @@ -172,6 +172,13 @@ extends AbstractSeq[T] with IndexedSeq[T] with Serializable { try containsTyped(x.asInstanceOf[T]) catch { case _: ClassCastException => false } + final override def sum[B >: T](implicit num: Numeric[B]): B = { + import num.Ops + if (isEmpty) this.num fromInt 0 + else if (numRangeElements == 1) head + else ((this.num fromInt numRangeElements) * (head + last) / (this.num fromInt 2)) + } + override lazy val hashCode = super.hashCode() override def equals(other: Any) = other match { case x: NumericRange[_] => |