1 files changed, 16 insertions, 0 deletions
diff --git a/third_party/bazel/rules_haskell/examples/vector/benchmarks/TestData/Random.hs b/third_party/bazel/rules_haskell/examples/vector/benchmarks/TestData/Random.hs
new file mode 100644
index 0000000000..f9b741fb97
--- /dev/null
+++ b/third_party/bazel/rules_haskell/examples/vector/benchmarks/TestData/Random.hs
@@ -0,0 +1,16 @@
+module TestData.Random ( randomVector ) where
+
+import qualified Data.Vector.Unboxed as V
+
+import System.Random.MWC
+import Control.Monad.ST ( runST )
+
+randomVector :: (Variate a, V.Unbox a) => Int -> IO (V.Vector a)
+randomVector n = withSystemRandom $ \g ->
+  do
+    xs <- sequence $ replicate n $ uniform g
+    io (return $ V.fromListN n xs)
+  where
+    io :: IO a -> IO a
+    io = id
+