product -package:rio
The
product function computes the product of the numbers of a
structure.
Examples
Basic usage:
>>> product []
1
>>> product [42]
42
>>> product [1..10]
3628800
>>> product [4.1, 2.0, 1.7]
13.939999999999998
>>> product [1..]
* Hangs forever *
The
product function computes the product of a finite list of
numbers.
>>> product []
1
>>> product [42]
42
>>> product [1..10]
3628800
>>> product [4.1, 2.0, 1.7]
13.939999999999998
>>> product [1..]
* Hangs forever *
O(n) Compute the product of the elements.
Examples
>>> import qualified Data.Vector as V
>>> V.product $ V.fromList [1,2,3,4]
24
>>> V.product (V.empty :: V.Vector Int)
1
O(n) Compute the product of the elements.
Examples
>>> import qualified Data.Vector.Strict as V
>>> V.product $ V.fromList [1,2,3,4]
24
>>> V.product (V.empty :: V.Vector Int)
1
O(n) Compute the product of the elements.
Examples
>>> import qualified Data.Vector.Primitive as VP
>>> VP.product $ VP.fromList [1,2,3,4 :: Int]
24
>>> VP.product (VP.empty :: VP.Vector Int)
1
O(n) Compute the product of the elements.
Examples
>>> import qualified Data.Vector.Storable as VS
>>> VS.product $ VS.fromList [1,2,3,4 :: Int]
24
>>> VS.product (VS.empty :: VS.Vector Int)
1
O(n) Compute the product of the elements.
Examples
>>> import qualified Data.Vector.Unboxed as VU
>>> VU.product $ VU.fromList [1,2,3,4 :: Int]
24
>>> VU.product (VU.empty :: VU.Vector Int)
1
Get the product of all values in the stream.
Subject to fusion
Compute the product of the elements of a
Producer
Computes the product of all elements
Stricter version of
product.
>>> product [1..10]
3628800
Fold a
Stream of numbers into their product with the return
value
mapped product :: Stream (Stream (Of Int)) m r -> Stream (Of Int) m r
product does not need a one for initialization
Determine the product of all elements of a stream of numbers. Returns
1 when the stream is empty.
product = Stream.fold Fold.product
Compute the product of a finite list of numbers.
\(Array16 xs) -> Array.product xs == product (Array.toList xs)
O(n) Compute the product of the elements.
O(n) Compute the product of the elements.
O(n) Compute the product of the elements.
O(n) Compute the product of the elements.