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| -rw-r--r-- | src/library/scala/collection/mutable/ListBuffer.scala | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/src/library/scala/collection/mutable/ListBuffer.scala b/src/library/scala/collection/mutable/ListBuffer.scala index 3bb7004184..aa79e972d5 100644 --- a/src/library/scala/collection/mutable/ListBuffer.scala +++ b/src/library/scala/collection/mutable/ListBuffer.scala @@ -119,6 +119,10 @@ final class ListBuffer[A] // Don't use the inherited size, which forwards to a List and is O(n). override def size = length + // Override with efficient implementations using the extra size information available to ListBuffer. + override def isEmpty: Boolean = len == 0 + override def nonEmpty: Boolean = len > 0 + // Implementations of abstract methods in Buffer override def apply(n: Int): A = |