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+{-# LANGUAGE DataKinds #-}
+{-# LANGUAGE GADTs #-}
+{-# LANGUAGE TypeApplications #-}
+module Main where
+
+import Data.Array.Nested
+
+
+arr :: Ranked N2 (Shaped [N2, N3] (Double, Int))
+arr = rgenerate (3 ::: 4 ::: IZR) $ \(i ::: j ::: IZR) ->
+ sgenerate @[N2, N3] (2 ::$ 3 ::$ IZS) $ \(k ::$ l ::$ IZS) ->
+ let s = i + j + k + l
+ in (fromIntegral s, s)
+
+foo :: (Double, Int)
+foo = arr `rindex` (2 ::: 1 ::: IZR) `sindex` (1 ::$ 1 ::$ IZS)
+
+main :: IO ()
+main = do
+ print arr
+ print foo