SI-6916 makes FlatHashTable#remove a Boolean not Option[A]

Makes FlatHashTable#remove return a boolean instead of Option[A].
Updates HashSet accordingly. Adds a test to make sure remove
works as advertised.

1 files changed, 13 insertions, 0 deletions

diff --git a/test/files/run/hashsetremove.scala b/test/files/run/hashsetremove.scala
new file mode 100644
index 0000000000..7b82a9909b
--- /dev/null
+++ b/test/files/run/hashsetremove.scala
@@ -0,0 +1,13 @@
+import scala.collection.mutable.HashSet
+
+
+object Test extends App {
+  val h = new HashSet[Int]
+  h += 1
+  println(s"remove 0 should be false, was ${h remove 0}")
+  println(s"contains 1 should be true, was ${h contains 1}")
+  println(s"remove 1 should be true, was ${h remove 1}")
+  println(s"contains 1 should be false, was ${h contains 1}")
+  println(s"remove 1 should be false, was ${h remove 1}")
+  println(s"contains 1 should be false, was ${h contains 1}")
+ }
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