Hi list, I am pleased to announce the first release of hmatrix-syntax [1], which provides quasiquoters to provide a nice syntax for vectors and matrices in Alberto Ruiz's excellent matrix package[2]. Examples:
{-# LANGUAGE QuasiQuotes, ViewPatterns #-}
import Data.Packed import Data.Packed.Syntax import Foreign.Storable
-- vectors can be constructed and deconstructed swap :: Storable a => Vector a -> Vector a swap [vec| x, y |] = [vec| y, x |]
-- matrices can be constructed and deconstructed adjugateMat2 :: (Storable a, Num a) => Matrix a -> Matrix a adjugateMat2 [mat| a, b; c, d |] = [mat| d, -b; -c, a |]
These constructions and deconstructions are expanded into direct array accesses. Regards, Reiner [1]: http://hackage.haskell.org/package/hmatrix-syntax [2]: http://hackage.haskell.org/package/hmatrix