foldl -base -package -text

foldl :: (a -> Char -> a) -> a -> ByteString -> a
bytestring Data.ByteString.Char8, bytestring Data.ByteString.Lazy.Char8
foldl, applied to a binary operator, a starting value (typically the left-identity of the operator), and a ByteString, reduces the ByteString using the binary operator, from left to right.
foldl :: (a -> Key -> a) -> a -> IntSet -> a
containers Data.IntSet
O(n). Fold the elements in the set using the given left-associative binary operator, such that foldl f z == foldl f z . toAscList. For example, > toDescList set = foldl (flip (:)) [] set
foldl :: (a -> Word8 -> a) -> a -> ByteString -> a
bytestring Data.ByteString.Lazy
foldl, applied to a binary operator, a starting value (typically the left-identity of the operator), and a ByteString, reduces the ByteString using the binary operator, from left to right.
foldl :: (a -> Word8 -> a) -> a -> ByteString -> a
bytestring Data.ByteString
foldl, applied to a binary operator, a starting value (typically the left-identity of the operator), and a ByteString, reduces the ByteString using the binary operator, from left to right. This function is subject to array fusion.
foldl :: (a -> b -> a) -> a -> IntMap b -> a
containers Data.IntMap.Strict, containers Data.IntMap.Lazy
O(n). Fold the values in the map using the given left-associative binary operator, such that foldl f z == foldl f z . elems. For example, > elems = reverse . foldl (flip (:)) [] > let f len a = len + (length a) > foldl f 0 (fromList [(5,"a"), (3,"bbb")]) == 4
foldl :: (a -> b -> a) -> a -> Map k b -> a
containers Data.Map.Lazy, containers Data.Map.Strict
O(n). Fold the values in the map using the given left-associative binary operator, such that foldl f z == foldl f z . elems. For example, > elems = reverse . foldl (flip (:)) [] > let f len a = len + (length a) > foldl f 0 (fromList [(5,"a"), (3,"bbb")]) == 4
foldl :: (a -> b -> a) -> a -> Set b -> a
containers Data.Set
O(n). Fold the elements in the set using the given left-associative binary operator, such that foldl f z == foldl f z . toAscList. For example, > toDescList set = foldl (flip (:)) [] set
foldl' :: (a -> Char -> a) -> a -> ByteString -> a
bytestring Data.ByteString.Char8, bytestring Data.ByteString.Lazy.Char8
'foldl\'' is like foldl, but strict in the accumulator.
foldl' :: (a -> Key -> a) -> a -> IntSet -> a
containers Data.IntSet
O(n). A strict version of foldl. Each application of the operator is evaluated before using the result in the next application. This function is strict in the starting value.
foldl' :: (a -> Word8 -> a) -> a -> ByteString -> a
bytestring Data.ByteString.Lazy
'foldl\'' is like foldl, but strict in the accumulator.
foldl' :: (a -> Word8 -> a) -> a -> ByteString -> a
bytestring Data.ByteString
'foldl\'' is like foldl, but strict in the accumulator. However, for ByteStrings, all left folds are strict in the accumulator.
foldl' :: (a -> b -> a) -> a -> IntMap b -> a
containers Data.IntMap.Strict, containers Data.IntMap.Lazy
O(n). A strict version of foldl. Each application of the operator is evaluated before using the result in the next application. This function is strict in the starting value.
foldl' :: (a -> b -> a) -> a -> Map k b -> a
containers Data.Map.Lazy, containers Data.Map.Strict
O(n). A strict version of foldl. Each application of the operator is evaluated before using the result in the next application. This function is strict in the starting value.
foldl' :: (a -> b -> a) -> a -> Set b -> a
containers Data.Set
O(n). A strict version of foldl. Each application of the operator is evaluated before using the result in the next application. This function is strict in the starting value.
foldl1 :: (Char -> Char -> Char) -> ByteString -> Char
bytestring Data.ByteString.Char8, bytestring Data.ByteString.Lazy.Char8
foldl1 is a variant of foldl that has no starting value argument, and thus must be applied to non-empty ByteStrings.
foldl1 :: (Word8 -> Word8 -> Word8) -> ByteString -> Word8
bytestring Data.ByteString.Lazy
foldl1 is a variant of foldl that has no starting value argument, and thus must be applied to non-empty ByteStrings. This function is subject to array fusion.
foldl1 :: (Word8 -> Word8 -> Word8) -> ByteString -> Word8
bytestring Data.ByteString
foldl1 is a variant of foldl that has no starting value argument, and thus must be applied to non-empty ByteStrings. This function is subject to array fusion. An exception will be thrown in the case of an empty ByteString.
foldl1' :: (Char -> Char -> Char) -> ByteString -> Char
bytestring Data.ByteString.Lazy.Char8
'foldl1\'' is like foldl1, but strict in the accumulator.
foldl1' :: (Char -> Char -> Char) -> ByteString -> Char
bytestring Data.ByteString.Char8
A strict version of foldl1
foldl1' :: (Word8 -> Word8 -> Word8) -> ByteString -> Word8
bytestring Data.ByteString.Lazy
'foldl1\'' is like foldl1, but strict in the accumulator.

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