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Diffstat (limited to 'src/reflect/scala/reflect/internal/util/Collections.scala')
| -rw-r--r-- | src/reflect/scala/reflect/internal/util/Collections.scala | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/src/reflect/scala/reflect/internal/util/Collections.scala b/src/reflect/scala/reflect/internal/util/Collections.scala index 738baddc08..7cc2952c96 100644 --- a/src/reflect/scala/reflect/internal/util/Collections.scala +++ b/src/reflect/scala/reflect/internal/util/Collections.scala @@ -244,6 +244,11 @@ trait Collections { true } + final def sequence[A](as: List[Option[A]]): Option[List[A]] = { + if (as.exists (_.isEmpty)) None + else Some(as.flatten) + } + final def transposeSafe[A](ass: List[List[A]]): Option[List[List[A]]] = try { Some(ass.transpose) } catch { |