+ package:vcr

(+) :: Num a => a -> a -> a
vcr Imports
(++) :: [a] -> [a] -> [a]
vcr Imports
Append two lists, i.e., 
[x1, ..., xm] ++ [y1, ..., yn] == [x1, ..., xm, y1, ..., yn]
[x1, ..., xm] ++ [y1, ...] == [x1, ..., xm, y1, ...]
If the first list is not finite, the result is the first list. WARNING: This function takes linear time in the number of elements of the first list.
(+++) :: ArrowChoice a => a b c -> a b' c' -> a (Either b b') (Either c c')
vcr Imports
Split the input between the two argument arrows, retagging and merging their outputs. Note that this is in general not a functor. The default definition may be overridden with a more efficient version if desired.
(<+>) :: ArrowPlus a => a b c -> a b c -> a b c
vcr Imports
An associative operation with identity zeroArrow.