diff options
-rw-r--r-- | src/library/scala/collection/mutable/ArrayOps.scala | 14 | ||||
-rw-r--r-- | test/files/run/array-addition.check | 4 | ||||
-rw-r--r-- | test/files/run/array-addition.scala | 11 |
3 files changed, 29 insertions, 0 deletions
diff --git a/src/library/scala/collection/mutable/ArrayOps.scala b/src/library/scala/collection/mutable/ArrayOps.scala index bb938a7aeb..6b778b26f5 100644 --- a/src/library/scala/collection/mutable/ArrayOps.scala +++ b/src/library/scala/collection/mutable/ArrayOps.scala @@ -52,6 +52,20 @@ trait ArrayOps[T] extends Any with ArrayLike[T, Array[T]] with CustomParalleliza super.toArray[U] } + def :+[B >: T: scala.reflect.ClassTag](elem: B): Array[B] = { + val result = Array.ofDim[B](repr.length + 1) + Array.copy(repr, 0, result, 0, repr.length) + result(repr.length) = elem + result + } + + def +:[B >: T: scala.reflect.ClassTag](elem: B): Array[B] = { + val result = Array.ofDim[B](repr.length + 1) + result(0) = elem + Array.copy(repr, 0, result, 1, repr.length) + result + } + override def par = ParArray.handoff(repr) /** Flattens a two-dimensional array by concatenating all its rows diff --git a/test/files/run/array-addition.check b/test/files/run/array-addition.check new file mode 100644 index 0000000000..7bfbd9c711 --- /dev/null +++ b/test/files/run/array-addition.check @@ -0,0 +1,4 @@ +Array(1, 2, 3, 4) +Array(1, 2, 3, 4) +Array(1) +Array(1) diff --git a/test/files/run/array-addition.scala b/test/files/run/array-addition.scala new file mode 100644 index 0000000000..8def48e85c --- /dev/null +++ b/test/files/run/array-addition.scala @@ -0,0 +1,11 @@ +object Test { + def prettyPrintArray(x: Array[_]) = println("Array(" + x.mkString(", ") + ")") + + def main(args: Array[String]): Unit = { + prettyPrintArray(Array(1,2,3) :+ 4) + prettyPrintArray(1 +: Array(2,3,4)) + prettyPrintArray(Array() :+ 1) + prettyPrintArray(1 +: Array()) + } +} + |