|Simple combinators working solely on and with functions.
|id :: a -> a|
|const :: a -> b -> a|
|(.) :: (b -> c) -> (a -> b) -> a -> c|
|flip :: (a -> b -> c) -> b -> a -> c|
|($) :: (a -> b) -> a -> b|
|fix :: (a -> a) -> a|
|on :: (b -> b -> c) -> (a -> b) -> a -> a -> c|
|(.) :: (b -> c) -> (a -> b) -> a -> c||Source|
|flip :: (a -> b -> c) -> b -> a -> c||Source|
|flip f takes its (first) two arguments in the reverse order of f.
|($) :: (a -> b) -> a -> b||Source|
Application operator. This operator is redundant, since ordinary
application (f x) means the same as (f $ x). However, $ has
low, right-associative binding precedence, so it sometimes allows
parentheses to be omitted; for example:
f $ g $ h x = f (g (h x))
It is also useful in higher-order situations, such as map ($ 0) xs,
or zipWith ($) fs xs.
|fix f is the least fixed point of the function f,
i.e. the least defined x such that f x = x.
|on :: (b -> b -> c) -> (a -> b) -> a -> a -> c||Source|
(*) `on` f = \x y -> f x * f y.
Typical usage: sortBy (compare `on` fst).
|Produced by Haddock version 0.9|