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{-# LANGUAGE DataKinds #-}
{-# LANGUAGE GADTs #-}
{-# LANGUAGE TypeApplications #-}
module Main where
import Data.Array.Nested
arr :: Ranked I2 (Shaped [2, 3] (Double, Int))
arr = rgenerate (3 ::: 4 ::: IZR) $ \(i ::: j ::: IZR) ->
sgenerate @[2, 3] $ \(k ::$ l ::$ IZS) ->
let s = 24*i + 6*j + 3*k + l
in (fromIntegral s, s)
foo :: (Double, Int)
foo = arr `rindex` (2 ::: 1 ::: IZR) `sindex` (1 ::$ 1 ::$ IZS)
bad :: Ranked I2 (Ranked I1 Double)
bad = rgenerate (3 ::: 4 ::: IZR) $ \(i ::: j ::: IZR) ->
rgenerate (i ::: IZR) $ \(k ::: IZR) ->
let s = 24*i + 6*j + 3*k
in fromIntegral s
main :: IO ()
main = do
print arr
print foo
print (rtranspose [1,0] arr)
-- print bad
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