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Add functor instance (operating elementwise) to Matrix #2

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Add functor instance (operating elementwise) to Matrix #2

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7 changes: 5 additions & 2 deletions src/LinearAlgebra/Matrix.purs
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Original file line number Diff line number Diff line change
@@ -1,5 +1,5 @@
module LinearAlgebra.Matrix
( Matrix
( Matrix
-- * Constructors
, fromArray
, fromColumn
Expand Down Expand Up @@ -44,6 +44,9 @@ instance showMatrix :: Show a => Show (Matrix a) where
<> ", ncols=" <> show c
<> ", data=" <> show ds

instance functorMatrix :: Functor (Matrix a) where
map f (Dense n m vs) = Dense n m (map f vs)


-- | Number of rows in matrix
nrows :: ∀ a. Matrix a -> Int
Expand Down Expand Up @@ -191,4 +194,4 @@ add :: Matrix Number -> Matrix Number -> Matrix Number
add (Dense r1 c1 vs1) (Dense r2 c2 vs2)
| r1 /= r2 || c1 /= c2 = zeros 1 1
| otherwise = Dense r1 c1 $ V.add vs1 vs2