Safe Haskell  None 

Language  Haskell98 
 data N = Nested {
 nestedLength :: !Int
 class (Vector Vector a, MVector MVector a) => Unbox a
 fromLists :: TargetI l a => Name l > [[a]] > Array N (Array l a)
 fromListss :: TargetI l a => Name l > [[[a]]] > Array N (Array N (Array l a))
 mapElems :: (Array l1 a > Array l2 b) > Array N (Array l1 a) > Array N (Array l2 b)
 slices :: Array F Int > Array F Int > Array l a > Array N (Array l a)
 concats :: Array N (Array N (Array l a)) > Array N (Array l a)
 segment :: (BulkI l a, Unbox a) => (a > Bool) > (a > Bool) > Array l a > Array N (Array l a)
 segmentOn :: (BulkI l a, Unbox a) => (a > Bool) > Array l a > Array N (Array l a)
 dice :: (BulkI l a, Windowable l a, Unbox a) => (a > Bool) > (a > Bool) > (a > Bool) > (a > Bool) > Array l a > Array N (Array N (Array l a))
 diceSep :: (BulkI l a, Eq a) => a > a > Array l a > Array N (Array N (Array l a))
 trims :: BulkI l a => (a > Bool) > Array N (Array l a) > Array N (Array l a)
 trimEnds :: BulkI l a => (a > Bool) > Array N (Array l a) > Array N (Array l a)
 trimStarts :: BulkI l a => (a > Bool) > Array N (Array l a) > Array N (Array l a)
 ragspose3 :: Array N (Array N (Array l a)) > Array N (Array N (Array l a))
Documentation
Nested array represented as a flat array of elements, and a segment descriptor that describes how the elements are partitioned into the subarrays. Using this representation for multidimentional arrays is significantly more efficient than using a boxed array of arrays, as there is no need to allocate the subarrays individually in the heap.
With a nested type like:
Array N (Array N (Array U Int))
, the concrete representation consists
of five flat unboxed vectors: two for each of the segment descriptors
associated with each level of nesting, and one unboxed vector to hold
all the integer elements.
UNSAFE: Indexing into raw material arrays is not bounds checked. You may want to wrap this with a Checked layout as well.
Nested  

Eq N Source #  
Show N Source #  
Layout N Source #  Nested arrays. 
(BulkI l a, Windowable l a) => Bulk N (Array l a) Source #  Nested arrays. 
(BulkI l a, Windowable l a) => Windowable N (Array l a) Source #  Windowing Nested arrays. 
(Bulk l a, Target l a, (~) * (Index l) Int) => Target N (Array l a) Source #  
Eq (Name N) Source #  
Show (Name N) Source #  
Show (Array l a) => Show (Array N (Array l a)) Source #  
data Name N Source #  
type Index N Source #  
data Array N (Array l a) Source #  
data Buffer N (Array l a) Source #  
class (Vector Vector a, MVector MVector a) => Unbox a #
Unbox Bool  
Unbox Char  
Unbox Double  
Unbox Float  
Unbox Int  
Unbox Int8  
Unbox Int16  
Unbox Int32  
Unbox Int64  
Unbox Word  
Unbox Word8  
Unbox Word16  
Unbox Word32  
Unbox Word64  
Unbox ()  
(RealFloat a, Unbox a) => Unbox (Complex a)  
(Unbox a, Unbox b) => Unbox (a, b)  
(Unbox a, Unbox b) => Unbox ((:*:) a b)  
(Unbox a, Unbox b, Unbox c) => Unbox (a, b, c)  
(Unbox a, Unbox b, Unbox c, Unbox d) => Unbox (a, b, c, d)  
(Unbox a, Unbox b, Unbox c, Unbox d, Unbox e) => Unbox (a, b, c, d, e)  
(Unbox a, Unbox b, Unbox c, Unbox d, Unbox e, Unbox f) => Unbox (a, b, c, d, e, f)  
Conversion
fromLists :: TargetI l a => Name l > [[a]] > Array N (Array l a) Source #
O(size src) Convert some lists to a nested array.
fromListss :: TargetI l a => Name l > [[[a]]] > Array N (Array N (Array l a)) Source #
O(size src) Convert a triply nested list to a triply nested array.
Mapping
mapElems :: (Array l1 a > Array l2 b) > Array N (Array l1 a) > Array N (Array l2 b) Source #
Apply a function to all the elements of a doubly nested array, preserving the nesting structure.
Slicing
:: Array F Int  Segment starting positions. 
> Array F Int  Segment lengths. 
> Array l a  Array elements. 
> Array N (Array l a) 
O(1). Produce a nested array by taking slices from some array of elements.
This is a constant time operation, as the representation for nested vectors just wraps the starts, lengths and elements vectors.
Concatenation
concats :: Array N (Array N (Array l a)) > Array N (Array l a) Source #
Segmented concatenation. Concatenate triply nested vector, producing a doubly nested vector.
 Unlike the plain
concat
function, this operation is performed entirely on the segment descriptors of the nested arrays, and does not require the inner array elements to be copied.
> import Data.Repa.Nice > nice $ concats $ fromListss U [["red", "green", "blue"], ["grey", "white"], [], ["black"]] ["red","green","blue","grey","white","black"]
Splitting
:: (BulkI l a, Unbox a)  
=> (a > Bool)  Detect the start of a segment. 
> (a > Bool)  Detect the end of a segment. 
> Array l a  Vector to segment. 
> Array N (Array l a) 
O(len src). Given predicates which detect the start and end of a segment, split an vector into the indicated segments.
:: (BulkI l a, Unbox a)  
=> (a > Bool)  Detect the end of a segment. 
> Array l a  Vector to segment. 
> Array N (Array l a) 
O(len src). Given a terminating value, split an vector into segments.
The result segments do not include the terminator.
> import Data.Repa.Nice > nice $ segmentOn (== ' ') (fromList U "fresh fried fish ") ["fresh "," "," ","fried ","fish "," "]
:: (BulkI l a, Windowable l a, Unbox a)  
=> (a > Bool)  Detect the start of an inner segment. 
> (a > Bool)  Detect the end of an inner segment. 
> (a > Bool)  Detect the start of an outer segment. 
> (a > Bool)  Detect the end of an outer segment. 
> Array l a  Array to dice. 
> Array N (Array N (Array l a)) 
O(len src). Like segment
, but cut the source array twice.
:: (BulkI l a, Eq a)  
=> a  Terminating element for inner segments. 
> a  Terminating element for outer segments. 
> Array l a  Vector to dice. 
> Array N (Array N (Array l a)) 
O(len src). Given field and row terminating values, split an array into rows and fields.
Trimming
trims :: BulkI l a => (a > Bool) > Array N (Array l a) > Array N (Array l a) Source #
For each segment of a nested array, trim elements off the start and end of the segment that match the given predicate.
trimEnds :: BulkI l a => (a > Bool) > Array N (Array l a) > Array N (Array l a) Source #
For each segment of a nested array, trim elements off the end of the segment that match the given predicate.
trimStarts :: BulkI l a => (a > Bool) > Array N (Array l a) > Array N (Array l a) Source #
For each segment of a nested array, trim elements off the start of the segment that match the given predicate.